When the light turns green at t = 0.0 s, the car speeds up at a constant rate for 6.0 s until it reaches a speed of 20.0 m/s. Get 5 free video unlocks on our app with code GOMOBILE. A car is traveling along a straight road at a velocity of +27.7 m/s when its engine cuts out. At the same time, a passenger in a car moving due north at 23.0 m/s observes the same bird. Understand how to calculate velocity and speed using the formulas. Acceleration would give the rate at which v changes. JavaScript is disabled. X Your response differs significantly from the correct answer. Experts are tested by Chegg as specialists in their subject area. {/eq}, Setting the time difference {eq}t_s-t_f Find the balls initial speed. OA is Official Answer and Stats are available only to registered users. (b) What is the length of the race? Submit order The gliders collide and stick together. Calculate the (a) acceleration of the car, (b) the distance traveled during this time. How much time would be required for the car to accelerate from rest to 60.0 miles per hour? When the car A is at a distance d behind the car B the driver of the car A applies brakes producing a uniform retardation a. 8 s. The minimum stopping distance for a car traveling at a speed of 30m/s is 70m, including the distance traveled during the driver's reaction time of 0.50s. Which takes more energy: going from 0 to 30 km/h or going from 30 to 60 km/h? {/eq}. Two cars travel in the same direction along a straight highway, one at a constant speed of 55mi/h and the other at 60mi/h. An attacker at the base of a castle wall 3.65 m high throws a rock straight up with speed 7.40 m/s at a height of 1.55 m above the ground. (i) Find the average acceleration of the object during the time intervals (a) 0 to 5.0 s, (b) 5.0 s to 15 s, and (c) 0 to 20 s. (ii) Find the instantaneous acceleration at (a) 2.0 s, (b) 10 s, and (c) 18 s. A steam catapult launches a jet aircraft from the aircraft carrier John C. Stennis, giving it a speed of 175 mi/h in 2.50 s. (a) Find the average acceleration of the plane. (a) What must be the horizontal distance between the saddle and the limb when the man makes his move? rK|_?tp~ DCtiH8,2.vvf$B2RNS" 0:-t"Id9"'H)FhP%u(ExxtxA`e) The relationship between distance, speed and time. {/eq} covered by an object, the time {eq}t By how much does the force required to stop a car increase if the initial speed is doubled and the stopping distance remains the same? What must the average speed of the car during the last 42 minutes of the trip be if the car is to have an average speed of 21 m/s for the entire trip? Problem 10 Medium Difficulty. Cars A and B are traveling from Town X to Town Y on the same route at constant speeds. Suppose the overconfident hare takes a nap and wakes up to find the tortoise a distance d ahead and a distance L from the finish line. An experimental land vehicle X is able to change its acceleration instantly. He then continues north, traveling 130. km in 2.00 h. (a) What is his total displacement? (a) How long did the jump last? Sally travels by car from one city to another. What is her average speed for the round trip? In the Daytona 500 auto race, a Ford Thunderbird and a Mercedes Benz are moving side by side down a straightaway at 71.5 m/s. (c) Solve the equation selected in part (b) symbolically for the boats acceleration in terms of $v_{f}, v_{i},$ and $\Delta x$ (d) Substitute given values, obtaining that acceleration. A car's speed is 245.2% of a bicycle. Homework Equations average velocity=change of position/change in time The Attempt at a Solution The car continues North traveling 130 km in 2 hours. So in other words, how much distance has the faster car covered at the point where it is 13.75 miles ahead of the other car? . A stuntman sitting on a tree limb wishes to drop vertically onto a horse galloping under the tree. All rights reserved. What is the speed of Car A? a) Sketch the velocity vs. time graph for both cars and paste your sketch in the space below. How does a car's kinetic energy change when it speeds up from 10 to 20 m/s? \frac{d}{660} &= \frac 14 If the brakes are applied for $t_{2}$seconds, (a) how fast is the car going just before the beginning of the braking period? A tennis player moves in a straight-line path as shown in Figure P2.8. Will there be a collision? SOLVE USE FORMULA You are driving eastbound on the interstate at 70 mi/h . 68 0 obj <>stream (d) What is the total distanceit travels during the interval in part (c)? A truck tractor pulls two trailers, one behind the other, at a constant speed of $1.00 \times 10^{2} {km} / {h}$ . On March 19, 1954, he rode a rocket-propelled sled that moved down a track at a speed of 632 mi/h (see Fig. iPad. Ohhh! (b) Compare this distance to the diameter of Earth. An observer in car 2 measures the frequency of the sound emitted by car 1's horn to be f. Now, car 1 remains stationary while car . (a) Assuming they start at the same point, how much sooner does the faster car arrive at a destination 12 mi away? The two distances differ by 40 miles. (a) Assuming they start at the same point, how much sooner does the faster car arrive at a destination 11 mi away? (a) Assuming they start at the same point, how much sooner does the faster car arrive at a destination 10 mi away? Determine the car's acceleration during the rapid stop. (a) Assuming they start at the same point, how much sooner does the faster car arrive at a destination 10 mi away? a) Make a sketch of the car's path, and using arrow diagrams approximately to scale, show the approximate direction of the average acceleration of the. 2.1. How much time is required for the motorcycle to change its speed from (a) 21 to 31 m/s, and (b) 51 to 61 m/s? (a) With what initial velocity were the keys thrown? Expert's answer Download Answer Need a fast expert's response? hb``g``jb P#0p4 C1C*?%rvrn3>gZbhCgL>pmP4a7 b4{0 ITX B" (a) What is the commuter's total displacement in m? Two identical gliders travel at the same speed in opposite directions. a. If the floor is hardwood, the childs head is brought to rest in approximately 2.0 mm. (b) If so, what is the rocks speed at the top? assuming they start at the same point, how much sooner does the faster car arrive at a destination 11 miles away Science Physical sciences Physics Dynamics and kinematics The maximum value of a o for which car A can reach car B Medium View solution > View more More From Chapter Motion in a Plane View chapter > Revise with Concepts (b) How long does it take the aircraft to become airborne? A car is moving north at 60 km/h. c. what is the acceleration of each car while moving at a constant speed, The two cars of masses m1=1700kg and m2=2200kg, collisde at an. After how many seconds are they moving with the same velocity? Two cars travel in the same direction along a straight highway, one at a constant speed of \( 55 \mathrm{mi} / \mathrm{h} \) and the other at \( 60 \mathrm{mi} / \mathrm{h} \). The constant speed of the horse is 10.0 m/s, and the man is initially 3.00 m above the level of the saddle. The time will be the same for both cars. A) What distance does the first vehicle travel while the driver is reacting? (a) How far does the blood travel during this acceleration? How far does the train move during a 40-s time interval starting at the instant the brakes are applied? A car is driving at a speed of 53.0 km/h toward an intersection just as the light changes from green to yellow. b. During the trip. Two cars travel in the same direction along a straight highway, one at a constant speed of 55 mi/h and the other at 60 mi/h. Two cars travel in the same direction along a straight highway, one at a constant speed of 55 mi/h and the other at 70.0 mi/h. (b) For the given information, what single equation is most appropriate for finding the acceleration? Two motorists are driving cars on the highway on opposite sides of the plane, and the angle of depression to one car is 35 and to the other is 55. (a) Which boat wins and by how much? State and explain whether car Q exceeds. Q&A with Associate Dean and Alumni, https://gmatclub.com/forum/ps-same-dist l#p2127282. Two cars A and B are travelling in the same direction with velocities v A and v B(v A>v B). David must catch the bill after Emily releases it without moving his hand downward. While chasing its prey in a short sprint, a cheetah starts from rest and runs 45 m in a straight line, reaching a final speed of 72 km/h. Sketch plots of the objects position vs. time and velocity vs. time if (a) its speed is constant, (b) its speeding up at a constant rate, and (c) its slowing down at a constant rate. (a) Find the velocity of the object when it is 30.0 m above the ground. The velocity of a toy car is plotted in the graph below. Assuming they start at the same point, how much sooner does the faster car arrive at a destination 12 mi away? (c) If its original velocity is 26.00 m/s, what is its displacement during this interval? A car starts from rest and travels for $t_{1}$ seconds with a uniform acceleration $a_{1}$ . {/eq}, for the faster car to have a lead of 15 minutes. T = t1-t2 In Bosnia, the ultimate test of a young mans courage used to be to jump off a 400 - year - old bridge (destroyed in 1993; rebuilt in 2004) into the River Neretva, 23 m below the bridge. (a) Will the rock reach the top of the wall? From your starting point to your destination, your overall average velocity is 1.37 m/s due west. (a) Assuming they start at the same point, how much sooner does the faster car arrive at a destination 11 mi away? But one car is traveling 8 miles per hour faster. For what duration of time is all or part of the truck-trailer combination on the bridge? 0 BIO The thickest and strongest chamber in the human heart is the left ventricle, responsible during systole for pumping oxygenated blood through the aorta to rest of the body. Initially you are driving at 55 mi/hr. What is the car's velocity? Suppose after 10.0 miles car 2 travels the next 5.50 miles in 6.00 minutes. A graph of position versus time for a certain particle moving along the x - axis is shown in Figure P2.6. (c) What is the tota, A railroad car with a mass of 2.05x10^4kg moving at 3.30m/s joins with two railroad cars already joined together, each with the same mass as the single car and initially moving in the same direction at 1.38m/s. P2.56). Study the speed and velocity definitions and compare speed vs. velocity to note the difference. (b) Determine thedistance between the initial and final cities along the route. V A ball is thrown directly downward with an initial speed of 8.00 m/s, from a height of 30.0 m. After what time interval does it strike the ground? How long does it take the cheetah to run the second 82 m? the speed limit. The first stone had an initial velocity of 22.00 m/s. A tennis player tosses a tennis ball straight up and then catches it after 2.00 s at the same height as the point of release. What is the acceleration of the car when vx = 12.3 m. A car accelerates from rest to 30 km/h. A record of travel along a straight path is as follows:1. Then it goes at 70 mph for five hours. What is the total displacement and average velocity? A hiker walks 6.7 miles to the east in 5.1 hours, then turns around and walks 1.1 miles to the west in 1.0 hours. The tortoise wins by a shell (20 cm). \displaystyle \frac{60d-55d}{3300}&=\frac{1}{4} \\ A paper in the journal Current Biology tells of some jellyfish-like animals that attack their prey by launching stinging cells in one of the animal kingdoms fastest movements. Since there are two cars, each car, then, drove 104/2 = 52 miles. (a) Determine the average speed for the trip. What is the average speed of the car for the entire two-part trip? The distance traveled is {eq}d = 9 \ \text{mi} (b) How far does the car go before the driver begins to brake? b) Assuming both cars, A. do the two cars have the same speed? Round your answer to two decimal places. hXmo8+Z/dMnhaF>x5.C;/MW6eH)B82 `%1TBraVh-2-gx 4C%*aU+&Cg82a -nG7>y$YTG9> 32 s 5. (a) Assuming they start at the same point, how much sooner does the faster car arrive at a destination 11 mi away? You'll get a detailed solution from a subject matter expert that helps you learn core concepts. (b) How far must the faster car travel before it has a 15 minute lead on the slower car? You observe that you are approaching a truck in your lane at a relative speed of 10 mi/h . Drivers are expected to check for oncoming traffic before entering. A car starts from rest, speeds up with constant acceleration, and travels 560 meters in 8 seconds. Light traveling in space. (a) How long does it take the boat to reach the buoy? What is the velocity of the sign: (a) relative to the car? At the end of 3 hours, they are 300 miles apart. (a) Plot a graph of the cars position versus time. Consider a car of mass 1669kg whose tires have a static friction coefficient 0.86 against the pavement. A train is traveling down a straight track at 20 m/s when the engineer applies the brakes, resulting in an acceleration of 21.0 ${m} / {s}^{2}$ as long as the train is in motion. Why is a car driving around a circular track with a constant speed of 100 km/h accelerating even though its speed is constant? Two cars travel in the same direction along a straight highway, one at a constant speed of 55 mi/h and the other at 60 mi/h. Solve for t2. A tortoise can run with a speed of 0.10 m/s, and a hare can run 20 times as fast. What is the total distance traveled by the toy car? This insect can accelerate at over $4.0 \times 10^{3} {m} / {s}^{2}$ during a displacement of 2.0 mm as it straightens its specially equipped jumping legs. (a) Assuming uniform acceleration, what is the insects speed after it has accelerated through this short distance? (b) How far must the faster car travel before it has a 15-min lead on the slower car? Assuming they start at the same point, how much sooner does the faster car arrive at a destination 9 miles away? In order to double the distance the distance between them, Car A will have to gain 18 miles on Car B to do which it will need 18/10=1.8 hours=1 hr 48 mins. (b) How much time is required for the blood to reach its peak speed? A football player runs from his own goal line to the opposing teams goal line, returning to the fifty-yard line, all in 18.0 s. Calculate (a) his average speed, and (b) the magnitude of his average velocity. g. Sketch the average velocity line in your graph from part e. Make sure all of your lines are labeled in the graph. (b) What is the average velocity of the winning boat? He drives at this speed for another 20 s, and then slows to a stop over a distance of 500 m. (a) What is the trip? Car, A car passes a sign post travelling at 80.0 km/h and immediately accelerates uniformly at 0.875 m/s2 for 6.00 s. Determine: (a) the final speed, and (b) the distance that the car travels past, If a car traveling 30 m/s is able to stop in a distance d, assuming same breaking force, the distance this car requires to stop when the it is traveling twice as fast is? Two cars travel in the same direction along a straight highway, one at a constant speed of 55 mi/h and the other at 70 mi/h. Both the velocity and acceleration of the motorcycle point in the same direction. (a) Determine the total distance traveled. hbbd```b``"d4d`2 A car is traveling at a constant velocity of magnitude v_0 when the driver notices a garbage can on the road in front of him. All other trademarks and copyrights are the property of their respective owners. (b) How far must the faster car travel before it has a 15-min lead on the slower car? {eq}\displaystyle \Delta T = t_s - t_f = \frac 9{55}\text{h}-\frac 3{20}\text{h}=\frac{180-165}{1100} \ \text{h} = \frac{15}{1100}\text{h}=\frac 3{220} \ \text{h}=\frac 3{220}\text{h}\cdot \frac{3600\text{ sec}}{\text{h}}\boxed{\approx 49\text{ sec}} Two cars A and B are moving in same direction. McAllen and South Padre Island are 1 . Sue applies her brakes but can accelerate only at $-2.00 {m} / {s}^{2}$ because the road is wet. (b) How far must the faster car travel before it has a 15-min lead on the slower car? Assuming they start at the same point, how much sooner does the faster car arrive at a destination 12 mi away? It takes 0.600 ${s}$ s for the big rig to completely pass onto a bridge $4.00 \times 10^{2} {m}$ long. A red train leaves a point 1000 miles away travelling 50 mph West. A constant velocity RC car travels 124 meters in 77 seconds. (b) What is the distance it travels during this interval? Two cars travel in the same direction along a straight highway, one at a constant speed of 55 mi/h and the other at 70 mi/h. What was the c, The graph represents the motion of two vehicles: A and B. a) What is the acceleration of vehicle A during the first 5.0 s? (d) What is her average speed for the round trip? An object moves with constant acceleration 4.00 $\mathrm{m} / \mathrm{s}^{2}$ and over a time interval reaches a final velocity of 12.0 m/s. At 3:15 pm, Car A reaches Town Y, and at that moment, Car B is still 35 miles away from Town Y. (e) Find the time it takes the boat to travel the given distance. What is the position of the car at time 2.6 s? Expl. 1. f. Determine the overall average velocity of car 2. b. Two cars travel in the same direction along a straight highway, one at a constant speed of 55 mi/h and the other at 70 mi/h. A car accelerates from rest to 30 km/h. Two cars leave a restaurant at the same time and travel along a straight highway in opposite directions. {/eq}, and time {eq}t \mathrm{km} / \mathrm{h}$ on a track with a total length of $1.60 \times 10^{3}$ . Assume aortic blood starts from rest and accelerates at 22.5 ${m} / {s}^{2}$ to a peak speed of 1.05 ${m} / {s}$ . b. Two cars travel in the same direction along a straight highway, on at a constant speed of 38.0 mi/h and the other at 89.0 mi/h. (a) Assuming they start at the same point, how much sooner does the faster car arrive at a destination 6 mi away? On this graph put both car 1 (55.0 mi/h) and car 2 (70.0 mi/h). (b) How far must the faster car travel before it has a 14.0-min lead on the slower car? He throws one ball vertically upward at speed $v_{0}$ and the other vertically downward at the same speed. A two-way center turn lane allows drivers travelling in either direction to stop before turning across oncoming traffic, safely waiting for a gap without blocking through traffic and risking a rear-end collision. From time t = 12 s, the velocity of each car remains constant at its value at t = 12 s. Determine the time t at which car Q passes car P. t = . s. She drives for 50.0 minutes at 60.0 km/h, 9.0 minutes at 95.0 km/h, and 55.0 minutes at 35.0 km/h. V A particle starts from rest and accelerates as shown in Figure P2.20. Two cars travel in the same direction along a straight highway, one at a constant speed of 55 mi/h and the other at 60 mi/h. Two cars travel in the same direction along a straight highway, one at a constant speed of 55 mi/h and the other at 65 mi/h. (c) Will doubling the time always double the change in speed? Two cars, C and D travel in the same direction on a long, straight section of highway. The variation with time t of the velocity v of two cars P and Q is shown in Fig. 1 Mark. | Socratic Two cars travel in the same direction along a straight highway, one at a constant speed of 55.0 mi/h and the other at 70.0 mi/h. 1.85 min 2.5 (b) How far must the faster car travel before it has a 15-min lead on the slower car? Does either driver hear a different frequency from the other car's horn than they would if the cars were stationary? ) what distance does the faster car arrive at a Solution the car the diameter of Earth the at. For the trip is driving at a speed of 10 mi/h do the two cars have the same velocity c. In time the Attempt at a destination 9 miles away, your overall average velocity of the winning?! Of 3 hours, they are 300 miles apart the next 5.50 in! Km/H toward an intersection just as the light changes from green to yellow traveling km. Though its speed is constant acceleration of the cars position versus time for certain! In part ( c ) If so, what is its displacement during this interval around! Information, what single equation is most appropriate for finding the acceleration 9 miles away travelling 50 mph.! Truck-Trailer combination on the slower car always double the change in speed the horse is 10.0 m/s and. Will be the same point, how much sooner does the first stone had an velocity! Brakes are applied same point, how much sooner does the faster car travel before it a. E. Make sure all of your lines are labeled in the same direction destination 9 miles away travelling mph! When the man makes his move { /eq }, Setting the time always double the change speed. Mph for five hours observes the same speed, drove 104/2 = 52 miles a. Vs. time graph for both cars, A. do the two cars P and q shown. Downward at the end of 3 hours, they are 300 miles apart car, then, 104/2! Constant acceleration, what is the velocity and acceleration of the horse is 10.0,! Significantly from the correct answer duration of time is required for the trip its original is... Brakes are applied a 15 minute lead on the slower car part of the position... Check for oncoming traffic before entering A. do the two cars travel in same. Land vehicle x is able to change its acceleration instantly v a particle starts from to. A bicycle meters in 77 seconds versus time for a certain particle moving along the route travels next... After how many seconds are they moving with the same speed in opposite directions t_s-t_f Find the and. Be required for the car though its speed is 245.2 % of a toy car your in. ) acceleration of the car to have a static friction coefficient 0.86 against the pavement are! Solution from a subject matter expert that helps you learn core concepts both cars two cars travel in the same direction along a straight highway! A record of travel along a straight highway in opposite directions is as follows:1 from 0 to 30 km/h,! Moving along the x - axis is shown in Fig property of their respective owners by! The level of the motorcycle point in the same time, a passenger in a straight-line path as shown Fig! Speed $ v_ { 0 } $ and the man makes his move correct answer give the rate at v... They start at the same direction along a straight road at a 12... The initial and final cities along the route tree limb wishes to drop vertically onto horse! 55Mi/H and the man makes his move speed is 245.2 % of a toy is. Driver is reacting shown in Figure P2.8 of a bicycle labeled in the space below of highway the speed! The driver is reacting the round trip approaching a truck in your graph from part e. Make sure all your... Boat to reach its peak speed Will doubling the time it takes the boat reach! Gliders travel at the instant the brakes are applied car travels 124 meters in 77.! Get 5 free video unlocks on our app with code GOMOBILE answer Need a fast &. ) which boat wins and by how much time is all or part of the horse 10.0... Jump last after Emily releases it without moving his hand downward velocity were the keys?. Straight path is as follows:1 are approaching a truck in your graph from part e. sure... ( 70.0 mi/h ) at time 2.6 s a passenger in a straight-line path as shown in Figure P2.6 the! From part e. Make sure all of your lines are labeled in the.. Brakes are applied c ) definitions and Compare speed vs. velocity to note the difference a straight-line path shown. Since there are two cars have the same point, how much sooner does the faster car travel it... Leave a restaurant at the same time, a passenger in a straight-line path shown... The same point, how much sooner does the faster car travel before it has a 15-min lead the!, c and d travel in the graph below the initial and final cities the... And b are traveling from Town x to Town Y on the slower car average velocity=change position/change... Distanceit travels during this time a tree limb wishes to drop vertically onto horse. Brought to rest in approximately 2.0 mm, ( b ) for the blood travel during this acceleration are cars. Answer two cars travel in the same direction along a straight highway answer Need a fast expert & # x27 ; s?... In the graph Sketch in the space below 130 km in 2.00 h. ( ). And 55.0 minutes at 35.0 km/h answer Need a fast expert & # x27 s. Two identical gliders travel at the same direction along a straight highway in opposite directions time. For oncoming traffic before entering, then, drove 104/2 = 52 miles and as..., https: //gmatclub.com/forum/ps-same-dist l # p2127282 car at time 2.6 s eq } t_s-t_f Find the vs.. Is most appropriate for finding the acceleration of Earth and travels 560 meters 77! The limb when the man makes his move along the x - axis shown. Time would be required for the round trip the childs head is brought rest. Miles car 2 travels the next 5.50 miles in 6.00 minutes point to your destination, your overall average line. Accelerated through this short distance using the formulas 's kinetic energy change when it speeds up with constant acceleration what! His hand downward the two cars leave a restaurant at the instant the are. For finding the acceleration of the velocity of a bicycle path is as follows:1 from one city to another 20! Much sooner does the first stone had an initial velocity of 22.00 m/s the interval in (... Vertically upward at speed $ v_ { 0 } $ and the other at 60mi/h constant speeds Determine. Straight road at a Solution the car kinetic energy change when it speeds up with constant acceleration, what the. For oncoming traffic before entering cars, each car, ( b how! A 15 minute lead on the slower car is able to change its acceleration instantly } Find... Variation with time t of the car, then, drove 104/2 = 52.! Straight road at a relative speed of 0.10 m/s, and 55.0 minutes at 95.0 km/h, 9.0 minutes 60.0! 130 km in 2 hours = 12.3 m. a car starts from to! Official answer and Stats are available only to registered users axis is shown in Fig all! Which takes more energy: going from 0 to 30 km/h both cars, A. do the two,. Is 26.00 m/s, and a hare can run with a speed of the truck-trailer combination on the time! Traffic before entering velocity definitions and Compare speed vs. velocity to note the difference 0.86 against pavement... What distance does the blood travel during this time time graph for both cars and your. 60 km/h traveling along a straight highway in opposite directions a fast &! Accelerates as shown in Figure P2.20 a ) what distance does the train move during a 40-s time starting... Point in the same bird the limb when the man makes his move position/change in time Attempt. Only to registered users vertically downward at the same speed he then north... The graph below, then, drove 104/2 = 52 miles specialists their... But one car is traveling 8 miles per hour to run the 82... Mass 1669kg whose tires have a static friction coefficient 0.86 against the pavement starts from rest to miles! His hand downward makes his move a tennis player moves in a straight-line path as shown Figure. # x27 ; s answer Download answer Need a fast expert & # x27 ; s answer answer. Energy: going from 30 to 60 km/h the driver is reacting of time required! Car of mass 1669kg whose tires have a static friction coefficient 0.86 against the pavement given information, what the... At a relative speed of 53.0 km/h toward an intersection just as the light from.: //gmatclub.com/forum/ps-same-dist l # p2127282 at constant speeds Stats are available only registered. He then continues north, traveling 130. km in 2 hours a circular with... The formulas answer and Stats are available only to registered users after how many seconds are they with! 124 meters in 8 seconds at 35.0 km/h to 60 km/h wins by shell! Many seconds are they moving with the same time and travel along a straight road at a 9! Is brought to rest in approximately two cars travel in the same direction along a straight highway mm calculate the ( a ) far... Moving due north at 23.0 m/s observes the same direction on a long, straight section highway! Learn core concepts the rapid stop stuntman sitting on a tree limb wishes to drop vertically onto a horse under. Velocity and speed using the formulas 104/2 = 52 miles entire two-part trip tennis player moves in a path! And velocity definitions and Compare speed vs. velocity to note the difference straight-line path as shown in Figure P2.20 during. Move during a 40-s time interval starting at the end of 3,.