Lesson 8 Law of Universal Gravitation

Newton said that any two masses will...

• combine into a larger mass.

• attract each other.

• create gravitational fields.

• push each other apart.

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NGSS.MS-PS2-4

The amount of matter in an object

• mass
• weight
• inertia
• gravity

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What states that "every object in the universe attracts every other object"?

• Law of Universal Gravitation
• Newton's First Law of Motion
• My mother
• Inertia & gravity

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NGSS.MS-PS2-4

Two factors effecting the magnitude of the force of gravity between 2 objects are...

• mass and distance 
• mass and matter
• distance and weight 
• weight and mass

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NGSS.MS-PS2-4

The moon and other satellites rotate around the earth. Identify the force that keeps these satellites in orbit.

• gravity
• friction
• a strong force
• electromagnetic force

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NGSS.MS-PS2-4

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Complete the following statement: The farther away two planets are from each other, the _______ the gravitational attraction force between them will be.

• more

• same

• less

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NGSS.MS-PS2-4

Force of gravity is directly proportional to

• Mass
• Weight
• Distance
• Time

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NGSS.MS-PS2-4

Which of the following is Newton's Law on Gravitation?

• F=Gm₁m₂/r
• F = Gm₁m₂/r²
• F = Gm₁m₂/2r
• F = m₁m₂/2r

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NGSS.HS-PS2-4

What happens to Gravitational force if I double both of the masses but don't change their distance?

• doubles

• half as big

• 4x bigger

• 4x smaller

Answer explanation

G(2m₁)(2m₂)=same as = 4(Gm₁m₂)=4F

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NGSS.MS-PS2-4

If I double the distance between two objects, what happens to their gravitational Force?

• 4x bigger

• 4x smaller

• 2x bigger

• 2x smaller

Answer explanation

2d²=4d