Question

mass=1kg
height=5m above ground
calculate its kinetic energy when it hits the ground
take g=10ms

Answer 1

Answer:

P.E=m×g×h

Given m=1 kg and h=1 m

P.E=1×10×5=50J

Hence potential energy is 50Joule.

Answer 2

Answer:

potential energy= mgh

p.e= 1×10×5

p.e=50

as potential energy is equal to kinetic energy

kinetic energy= 50