A body of mass 5 kg is moving at 4 m/s. What is its kinetic energy?
Q1. A body of mass 5 kg is moving at 4 m/s. What is its kinetic energy?
Answer: 40 J
Explanation: Kinetic energy = 1/2 mv² = 1/2 * 5 * 4² = 40 J, using the formula for kinetic energy.