A 1350 kg car on a straight road accelerates from 2.18 m/s to 7.75 m/s in a time of 5.77 s. Find the I. Average acceleration of the car II. Average velocity of the car III. Displacement covered by the car IV. The force required to produce the acceleration in (I) above.

A soft tennis ball is dropped onto a hard floor from a height of 1.85 m and rebounds to a height of 1.25 m. (Assume that the positive direction is upward.) (a) Calculate its velocity just before it strikes the floor.  m/s (b) Calculate its velocity just after it leaves the floor on its way back up.  m/s (c) Calculate its acceleration during contact with the floor if that contact lasts 3.50 ms.  m/s2 (d) How much did the ball compress during its collision with the floor, assuming the floor is absolutely rigid?

.  37) A cheetah can accelerate from rest to a speed of 30.0 m/s in 7.00 s. What is its acceleration?

19. GO The initial velocity and acceleration of four moving objects at a given instant in time are given in the following table. Determine the final speed of each of the objects, assuming that the time elapsed since t = 0 s is 2.0 s. Initial velocity vo Acceleration a +12 m/s +3.0 m/s² +12 m/s -3.0 m/s? - 12 m/s - 12 m/s (c) +3.0 m/s² (d) -3.0 m/s?