Question

An object of mass 20kg is released from a height of 10m above the ground level. The kinectic energy of the object just before it hits the ground is

Answer 1

Explanation:

kinetic energy =1/2(v^2-u^2)m

=1/2(20)(2×10×10)... g=10 and v^2=u^2+2as

=2000j