He force of gravity is an inverse square law. this means that, if you double the distance between two large masses, the gravitational force between them a) also doubles. b) strengthens by a factor of 4. c) weakens by a factor of 4. d) weakens by a factor of 2. e) is unaffected.

In a system with only a single force acting upon a body, what is the relationship between the change in kinetic energy and the work done by the force? answers: work is equal to the change in kinetic energy.work depends on the square of the change in potential energy.work is equal to the negative of the change in kinetic energy.work is equal to the square of the change in kinetic energy

Which body is in equilibrium? (1) a satellite orbiting earth in a circular orbit (2) a ball falling freely toward the surface of earth (3) a car moving with a constant speed along a straight, level road (4) a projectile at the highest point in its trajectory

Should we celebrate the voyages of zheng he mini q answer key