Question

a man climbs on to a wall that is 4.5m high and gains 2450j 0f potential energy.what is the mass of the man?

Answer 1

55.5 kg.

Explanation:

Potential energy = mgh

= m * 9.81 * 4.5 = 2450 where m is the mass of the man.

m = 2450 / (9.81* 4.5)

= 55.5 kg.