A 10 kg block is lifted to a height of 2 m in 4 seconds. What is the average power used?
Q1. A 10 kg block is lifted to a height of 2 m in 4 seconds. What is the average power used?
Answer: 49 W
Explanation: Work done = m * g * h = 10 kg * 9.8 m/s^2 * 2 m = 196 J, Power = work / time = 196 J / 4 s = 49 W.