Newton's Universal Law of Gravitation

When placed at equal distances apart, the greatest gravitational attraction will be between two

• skateboards

• bowling balls

• school buses

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NGSS.HS-PS2-4

Which is needed to determine the amount of gravitational force between two objects?

• distance and mass

• weight and time

• area and weight

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NGSS.HS-PS2-4

The gravitational force exerted by an object depends on its

• volume

• mass

• weight

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NGSS.MS-PS2-4

What is gravitational force?

• It makes objects at rest start moving.
• It makes objects that are moving stop.
• The force of attraction between two objects.
• It pulls you into space.

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NGSS.HS-ESS1-4

NGSS.HS-PS2-4

Gravity on moon is less than the gravity on earth because

• a. moon's mass is less

• b. moon's mass is more

• c. moon's mass is equal to Earth

• d. moon has no mass

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NGSS.MS-PS2-4

Complete the following statement: The farther away two planets are the _______ the gravitational force between them.

• more
• same
• dosen't matter
• less

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NGSS.HS-PS2-4

What is the proper setup of the gravitational force formula?

• F_g= Gm²/r

• F=ma

• F_g= Gr²/(m₁+m₂)

• F_g= G (m₁m₂)/r²

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NGSS.HS-PS2-4

What effect does increasing the distance between the two objects do to the gravitational force?

• The distance between two objects has no effect on the gravitational force

• It increases

• It stays the same

• It decreases

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NGSS.HS-PS2-4

When do gravitational forces exist between two objects?

• They only exist between microscopic objects.

• They are always present between any two objects.

• Gravitational forces only act on objects falling on Earth.

• They only exist for objects in space.

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NGSS.HS-PS2-4

Calculate the gravitational force between a 15-kg chinchilla and a 65-kg dog which are separated by 0.30 m.

• F_g = 3.7*10^-8 N

• F_g = 1.3*10¹² N

• F_g = 1.1*10⁵ N

• F_g = 7.2*10^-7 N

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