(a) Define kinetic energy. (b) The masses of scooter and bike are in the ratio of 2 :3 but moving with same speed of 108 km h^-1. Compute the ratio of their kinetic energy

(a) The energy possessed by a body by virtue of its motion.

(b) Given m1/m2 = 2/3
the ratio of KE is equal to the ratio of their masses if they have the same velocity, therefore, ratio of their KE is also 2 : 3.