How much work does gravity do?

Question

How much work does gravity do on a 0.170-kg ball falling from a height of 14.0 m? (Neglect air resistance.)

Answer 1

The gain in kinetic energy is due to the work done by gravity (also can be thought of as loss in potential energy).

 

Work = (mg)(Δh) = 0.17 (9.8) (14) = 23.324 N