Question

A tennis ball is dropped from 1.93 m above the

ground. It rebounds to a height of 0.921 m.
With what velocity does it hit the ground?
The acceleration of gravity is 9.8 m/s
2
. (Let
down be negative.)
Answer in units of m/s

Answer 1

1/2 m v^2 = m g h ... v = √(2 g h)