Question

Two bodies of equal mass move with uniform velocities v and 3v. Find the ratio of their kinetic energion.

Answer 1

Kinetic energy=1/2 mv^2

K.E1 / K.E2 = v1^2 / v2^2

K.E1 / K.E2 = v^2 / 9 v^2 ( v^2 gets cancelled)

Ans;; 1/9