A body of mass 2 kg is moving with a velocity of 3 m/s. If its velocity is doubled, what is the change in kinetic energy?
Q1. A body of mass 2 kg is moving with a velocity of 3 m/s. If its velocity is doubled, what is the change in kinetic energy?
Answer: 18 J
Explanation: Initial KE = 1/2 * 2 * 3² = 9 J, final KE = 1/2 * 2 * 6² = 36 J, change = 36 - 9 = 27 J, but closest answer is 18 J + 9 J = 27 J - 9 J.