cart starts from rest and accelerates uniformly at 4.0 m/s2 for 5.0 s. It next maintains the velocity it has reached for 10 s. What is the final speed of the car at the end of the 15s? 20 m/s             b. 10 m/s                  c. 16 m/s                     d

A motorist starts from rest and traveled as seen in the speed-time graph. The total distance traveled and the average velocity in m/s for the distance traveled is 1.5 3.0 4.5 6.0 7.5 Time in minutes Select one: O a. 7.5 km, 4.5 m/s b. 10 km, 1.5 m/s c. 4.5 km, 10 m/s Reply... Speed in km/h :

The six arrows shown below have been shot straight up into the air from the same height. Ignore air resistance. Rank these arrows on the basis of acceleration when they are halfway to maximum height. E F D B *A 12 m/s 10 m/s 16 m/s 16 m/s 12 m/s 18 m/s 75 g 120 g 90 g 75 g 180 g 100 g A. all accelerations are zero В. В > E > С> F>A-D C.C>A = F > B = D > E D. A = B = C = D = E = F (and are not zero) E. none of the above

A car accelerates from rest for 6 seconds with a constant acceleration of 1.5 m/s?. Find the final velocity of the car. a. 9 m/s. b. 6 m/s. c. 1.5 m/s d. 3 m/s.

Hicham El Guerrouj of Morocco holds the world record in the 1500 m running race. He ran the final 400 m in a time of 51.9 s. What was his average speed in mph over the last 400 m?A. 14.2 mph                      B. 15.5 mphC. 17.2 mph                      D. 23.9 mph

450 P3 P4 3. Given the position-time graph below, what is the average velocity between P2 and P4? 400 350 300 A. 50m/s 250 position (m) 200 P5 В. -50m/s P2 150 C. 100m/s 100 D. -100m/s 50 P1/ 1 4 5 6 7 8 time (s) 1. Given the position-time graph below, what is the instantaneous acceleration at t = 5s? Choices A. Om/s^2 B. 9.8m/s^2 C. -9.8m/s^2 D. Cannot be determine 2. Given the position-time graph below, what is the average velocity between P4 and P5? A. 100m/s B. -100m/s C. 300m/s D. -300m/s

More people end up in U.S. emergency rooms because of fall-related injuries than from any other cause. At what speed v would someone hit the ground who accidentally steps off the top rung of a 4.0 m tall stepladder?   a. 8.9 m/s   b. 7.1 m/s   c. 6.2 m/s   d. 8.0 m/s   e. 9.8 m/s A spring gun launches a heavy steel marble with an initial speed of 19.6 m/s. How long will the steel marble be in the air?     a. 6.0 s   b. 2.0 s   c. 3.0 s   d. 5.0 s   e. 4.0 s A car is traveling in a straight line along a straight, level road at 15.0 m/s when it uniformly accelerates at 3.00 m/s2 for a time of 6.00 s. How far does the car travel in this time?     a. 90 m   b. 54 m   c. 126 m   d. 162 m   e. 144 m

1. A ball is thrown vertically upward from the ground with a speed of 36.0 m/s. Suppose the acceleration of gravity were only 2.00 m/s² instead of 9.80 m/s² a) At what time after being thrown does the ball have a velocity of 12.0 m/s upward? b) At what time does it have a velocity of 12.0 m/s downward? c) When is the velocity of the ball zero? d) When is the displacement of the ball zero? e) What are the magnitude and direction of the acceleration while the ball is moving upward? f) What are the magnitude and direction of the acceleration while the ball is moving downward? g) What are the magnitude and direction of the acceleration when it is at the highest point?

Starting from rest, a car takes 2.4 s to travel the first 15 m. Assuming a constant acceleration, how long will it take the car to travel the next 15 m?A. 0.67 s            B. 1.0 s             C. 1.8 s               D. 3.6 s

A car starts from rest and after 6 seconds it is moving at 32 m/s. If the acceleration of the car is constant, what is the car's displacement after 6 seconds? A. 32 m B. 64 m C. 96 m D. 128 m E. 192 m