A baseball of mass 0.115 kg is pitched horizontally at a velocity of 35 m/s. After it is hit by the bat, the ball
moves horizontally at a velocity of -34 m/s.
A) What impulse did the bat deliver on the ball?
B) If the ball was in contact with the bat for 0.85-
ms, what was the average force the bat exerted on
the ball?

Abasketball star covers 2.65 m horizontally in a jump to dunk the ball. his motion through space can be modeled precisely as that of a particle at his center of mass. his center of mass is at elevation 1.02 m when he leaves the floor. it reaches a maximum height of 1.90 m above the floor and is at elevation 0.910 m when he touches down again. (a) determine his time of flight (his "hang time"). (b) determine his horizontal velocity at the instant of takeoff. (c) determine his vertical velocity at the instant of takeoff. (d) determine his takeoff angle. (e) for comparison, determine the hang time of a whitetail deer making a jump with center-of-mass elevations yi = 1.20 m, ymax = 2.45 m, and yf = 0.750 m.