Question

Two balls of steel having mass of 5 kg and 10kg each possess equal kinetic energy.which ball is moving faster,if at all

Answer 1

Kinetic energy (K.E.) = 1/2 M V^2

Hence, V (square) for 5kg = 2 x K.E / M = 2 KE/5 = 0.4 KE

And V(square) for 10kg = 2 KE/10 = 0.2 KE

Since 0.4 KE < 0.2 KE, hence Ball of 5kg is moving faster