Question: What is the gravitational potential energy of a 1 kg mass at a height of 10 m?

Options:

1. 10 J
2. 20 J
3. 30 J
4. 40 J

Correct Answer: 10 J

Solution:

Using the formula PE = m * g * h, where g = 10 m/s^2, PE = 1 kg * 10 m/s^2 * 10 m = 100 J.