Review Questions

1. Which of the following diagrams of two planets would represent the largest gravitational force between the masses?

   1. 

   2. 

   3. 

   4. 

   5. 

2. A satellite is in orbit around the Earth. Consider the following quantities:

   1. distance from the center of the Earth
   2. mass of the Earth
   3. mass of the satellite

   The gravitational acceleration g depends on which of the above?

   1. I only
   2. I and II only
   3. III only
   4. I and III only
   5. I, II, and III

3. As a satellite orbits the Earth, it passes points A and B. The satellite is traveling faster at point B than at point A. Consider the following statements:

   1. The gravitational force is greater at B than at A.
   2. The speed is greater at B than at A.
   3. The kinetic energy is greater at B than at A.
   4. The angular momentum is greater at B than at A.

   Which of the above statements are true?

   1. I only
   2. I and II only
   3. II only
   4. I, II, and III only
   5. I, II, III, IV

4. As a planet orbits the Sun, which of the following must remain constant?

   1. velocity
   2. gravitational force
   3. radius of orbit
   4. angular momentum
   5. the product of mass and velocity