Question

If speed of an object doubles then its kinetic energy increase 4 times.
But the formula for kinetic energy is 1/2mv^2, so if v^2 doubles then kinetic energy increases by two. i'm confused Pls help

Answer 1

Answer- it will be four times

Explaination-if the speed doubles the kinetic  energy will four times as 1 ^ 2 = 1

and 2 ^ 2 = 4.