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 2.10 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/s
- A 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/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 2.88 m/s2 for 19.0 s. 2. Maintain a constant velocity for the next 1.10 min. 3. Apply a constant negative acceleration of ?8.05 m/s2 for 6.80 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?
- 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/s1. 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.
- S 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.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?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?