Question

The K.E.of an object of Mass m moving with a velocity of 5 meter per second is 25j . What will be it's K.E. when its velocity is doubled? What will be its K.E. when it's velocity is increase 3 time

Answer 1

K. E=0.5*(m). 5^2
so mass will be 2 kg...
if v is doubled
then k is 100
if v is triple
then k is (15)^2