Question

2. An object of mass 70 kg is raised to a height of 10 m
above the ground. What is its potential energy? If the
object is allowed to fall, find its kinetic energy when it
is halfway down.​

Answer 1

Explanation:

P.E=mgh

p.e=70*10*10

p.e=7000j

k.e=1/2mv^2

k.e=1/2(70)*(7.12)^2

k.e=1/2(3570)

k.e=1785j