The potential energy of a body at a height of 5 m is 245 J. What is its mass?
Q1. The potential energy of a body at a height of 5 m is 245 J. What is its mass?
Answer: 5 kg
Explanation: Potential energy = m * g * h, so m = PE / (g * h) = 245 J / (9.8 m/s^2 * 5 m) = 5 kg.