Question

a stone having a mass of 250 gm is falling from a height .how much kinetic energy does it have at a moment when its velocity is 2m/s

Answer 1

kinetic energy=1\2mv2
1\2×250×2×2=500

Answer 2

ke =mv^2/2
m=0.25 kg
v=2 m/s
ke=1/2*0.25*2^2
=1*1/2
=1/2=0.5J