When a drag strip vehicle reaches a velocity of 60 m/s, it begins a negative acceleration by releasing a drag chute and applying its brakes. While reducing its velocity back to zero, its acceleration along a straight line path is a constant -7.5 m/s?. What displacement does it undergo during this deceleration period? 1) 240 m 2) 160 m 3) 80 m 4) 40 m 5) 20 m
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- To pass a physical education class at a university, a student must run 1.0 mi in 12 min. After running for 10 min, she still has 500 yd to go. If her maximum acceleration is 0.15 m/s2, can she make it? If the answer is no, determine what acceleration she would need to be successful.A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.05 m/s2 for 12.0 s.2. Maintain a constant velocity for the next 2.00 min.3. Apply a constant negative acceleration of −9.41 m/s2 for 2.61 s. (a) What was the total displacement for the trip? _ m(b) What were the average speeds for legs 1, 2, and 3 of the trip, as well as for the complete trip? _ m (b) What were the average speeds for legs 1, 2, and 3 of the trip, as well as for the complete trip? leg 1 _ m/s leg 2 _ m/s leg 3 _ m/s complete trip _ m/sA record of travel along a straight path is as follows:1. Start from rest with constant acceleration of 2.75 m/s2 for 16.0 s.2. Maintain a constant velocity for the next 2.90 min.3. Apply a constant negative acceleration of −9.27 m/s2 for 4.75 s.(a) What was the total displacement for the trip? m (b) What were the average speeds for legs 1, 2, and 3 of the trip, as well as for the complete trip?leg 1 m/sleg 2 m/sleg 3 m/scomplete trip m/s
- A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.10 m/s2 for 11.0 s.2. Maintain a constant velocity for the next 2.60 min.3. Apply a constant negative acceleration of −9.18 m/s2 for 2.52 s. (a) What was the total displacement for the trip? ?m(b) What were the average speeds for legs 1, 2, and 3 of the trip, as well as for the complete trip? leg 1 ?m/s leg 2 ?m/s leg 3 ?m/s complete trip ?m/s5 2 A small steel ball, dropped from rest, takes 0.50 s to fall through a vertical distance of 1.25 m. Determine (a) the average speed of the ball, AVO Speed=DIT = 1.25/0.5 = 2.5mls (b) the actual speed of the ball after it has fallen through a vertical distance of 1.25 m, assuming that the acceleration is constant, the value of that acceleration. (c)A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.55 m/s2 for 10.0 s. 2. Maintain a constant velocity for the next 1.00 min. 3. Apply a constant negative acceleration of −9.03 m/s2 for 2.82 s. (a) What was the total displacement for the trip? (b) What were the average speeds for legs 1, 2, and 3 of the trip, as well as for the complete trip?
- A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.10 m/s² for 18.0 s. 2. Maintain a constant velocity for the next 1.50 min. 3. Apply a constant negative acceleration of -9.02 m/s² for 4.19 s. (a) What was the total displacement for the trip? m (b) What were the average speeds for legs 1, 2, and 3 of the trip, as well as for the complete trip? leg 1 m/s leg 2 m/s leg 3 m/s complete trip m/sA record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.05 m/s² for 16.0 s. 2. Maintain a constant velocity for the next 1.80 min. 3. Apply a constant negative acceleration of -9.25 m/s² for 3.55 s. (a) What was the total displacement for the trip? m (b) What were the average speeds for legs 1, 2, and 3 of the trip, as well as for the complete trip? leg 1 m/s leg 2 leg 3 complete trip m/s m/s m/sS roller coaster rapidly picks up speed as it roles down a slope. As it startx down the slope the speed is 4 m/s. But 3 seconds later, at the bottom of the slope its speed is 22 m/s. What is the average acceleration.
- 1. An object moves with constant acceleration 4.00 m/s? and over a time interval reaches a final velocity of 12.0 m/s. i) If its initial velocity is 6.00 m/s, what is its displacement during the time interval? ii) How much time it takes to reach the velocity of 12 m/s? iii) If it travels with the same velocity for next 1.5 min, then find the distance travelled in 1.5 min. iv) Find average velocity of the object for whole journey.A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.35 m/s2 for 17.0 s. 2. Maintain a constant velocity for the next 2.40 min. 3. Apply a constant negative acceleration of −9.15 m/s2 for 4.37 s. (a) What was the total displacement for the trip? Find M (b) What were the average speeds for legs 1, 2, and 3 of the trip, as well as for the complete trip?Does acceleration depend on the speed of an object? Why or why not? Give an example of a slow object having a larger acceleration than a fast object. Can anyone think of an example of an object moving in such a way so that it is accelerating while having zero velocity?