Question

A tennis ball is hit into the air with a racket when is the balls kinetic energy he greatest ignore the air resistance

A)when it leaves the racket
B) just befor it reaches the ground
C) when it reaches its maximum height
D) just befor it starts falling downward

Answer 1

Kinetic energy is the energy of an object in motion.

The tennis ball would create kinetic energy as it was both traveling up to it's maximum height and as it was falling back down to the ground.

Because of gravity, the kinetic force would be greater as it was falling back to the ground though.

The answer would be B) just before it reaches the ground.