A B C D E 1. Six identical Physics books, each with mass 2.0 kg,
are taken to the Moon. On the Moon, their combined mass is a) zero,
b) 2.0 kg, c) 6.0 kg, d) 12 kg.
A B C D E 2. According to Newton's Law of Gravitation, if the
distance between two bodies is doubled the attractive force between
them is a) increased
by a factor of 2, b) decreased by a factor of 1/2, c) increased...