If the change in kinetic energy of a tennis ball hit by the racket is 29), and the average force that the racket exerts on the ball
is 80. N, what is the distance that the force is exerted over?

Amachine, modeled as a simple spring-mass system, oscillates in simple harmonic motion. its acceleration is measured to have an amplitude of 5,000 mm/s with a fre- quency of 10 hz. compute the maximum displacement the machine undergoes during this oscillation.

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?