A stone that has a mass of 2kg on Earth weighs about 19.6N. Its weight on the Moon is roughly 3.3N. Which explanation best accounts for this difference?
a) The stone’s mass decreases on the Moon.
b) There is no atmosphere on the Moon, so the stone experiences less weight.
c) The acceleration due to gravity on the Moon is much smaller than on Earth.
d) The universal gravitational constant G has a smaller value on the Moon.