1. What are the magnitude and direction of the gravitational force that acts on a professor who weighs 1000 N at the surface of Earth? 2. Is gravitational force acting on a person who falls off a...

1. What are the magnitude and direction of the gravitational force that acts on a professor who weighs 1000 N at the surface of Earth?

2. Is gravitational force acting on a person who falls off a cliff? Is it acting on an astronaut inside an orbiting space vehicle?

3. Are the planets of the solar system simply projectiles falling around the Sun?