A tennis ball is dropped from 1.54 m above the ground. It rebounds to a height of 0.845 m.

Question

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

V^2 = Vo^2 + 2g*h = 0 + 19.6*1.54 = 30.2
V = 5.49 m/s.