Answer
a. A, B, C, D.
b. A, B, C, D.
c. A, B, C, D.
d. A, B, C, D.
e. D, C, B, A.
f. A=B=C=D.
g. A, B, C, D.
Work Step by Step
a. The closer the satellite is to the planet, the stronger the gravitational force between them. Gravity is an inverse-square law.
b. The closer the satellite is to the planet, the smaller the PE and the greater the KE. We know this from conservation of energy of a body in orbit (page 198).
c. The closer the satellite is to the planet, the smaller the PE and the greater the KE. We know this from conservation of energy of a body in orbit (page 198). Greater KE corresponds to faster speed and a larger amount of momentum.
d, e. The closer the satellite is to the planet, the smaller the PE and the greater the KE. We know this from conservation of energy of a body in orbit (page 198).
f. The sum of KE and PE is constant. We know this from conservation of energy of a body in orbit (page 198).
g. The closer the satellite is to the planet, the stronger the gravitational force between them. Gravity is an inverse-square law. The greater the net force on the satellite, the greater its acceleration.
