I drop a 60-g golf ball from 2.0 m high.It rebounds to 1.3 m.How much energy is lost?
A) 0.29 J
B) 0.41 J
C) 0.88 J
D) 1.0 J

Question

Quizplus · Accepted Answer

The potential energy at the initial height (2.0 m) is mgh = 0.06 kg * 9.8 m/s² * 2.0 m = 1.176 J. The potential energy at the rebound height (1.3 m) is mgh = 0.06 kg * 9.8 m/s² * 1.3 m = 0.7644 J. The energy lost is 1.176 J - 0.7644 J = 0.4116 J, which rounds to 0.41 J.

I Drop a 60-G Golf Ball from 2