Universal Gravitation

Two asteroids exert a 400 N gravitational force on one another when they are 7 500 m apart. When the asteroids move so they are 30 000 m apart, the force is now

• 200 N

• 100 N

• 25 N

• 1600 N

Force of gravity is directly proportional to

• Mass
• Weight
• Distance
• Time

Tags

NGSS.HS-PS2-4

If Earth's mass was cut in half, what would happen to your mass?

• increase because gravitational force increases
• decrease because gravitational force decreases
• decrease because gravitational force increases
• nothing, mass is not affected by gravitational force

Tags

NGSS.MS-PS2-4

Two objects are attracted to each other with 36 N of gravitational force.
What would the force between them be if the distance between them were doubled?

• 9
• 18
• 72
• 144

Tags

NGSS.HS-PS2-4

The picture shows two situations of two objects gravitationally attracting each other. What is the proportional change in distance of situation 2 as compared to situation 1?

• 1/2

• 1

• 2

• 4

Tags

NGSS.HS-PS2-4

A car on Earth's surface (1×r from the center) has a weight of 3600 N. A car with half as much mass and 2×r from the surface (3×r from the center) has a weight of

• 900 N

• 1800 N

• 400 N

• 200 N