Question

when velocity of a body is increased 1/5 times, what is the change in its kinetic energy​

Answer 1

Explanation:

Formula for kinetic energy is 1/2 m v^2 If velocity of a body is increased by 5 times,

then v^2 will increase by 25 times but mass is still of body as it is not changing.

So, kinetic energy will increase by 25 times.