Intro to Gravity

Newton's Universal Law of Gravitation claims that the attraction between objects with mass depend on what 2 things?

• volume and height

• velocity and height

• acceleration and mass

• mass and distance

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NGSS.MS-PS2-4

On Earth, the gravitational pulls humans towards the center of Earth. What force is acting as gravity's "pair" when someone is standing on the ground?

• friction force

• normal force

• buoyancy force

• applied force

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Which system has the greater gravitational attraction between the two objects (if any)?

• System A

• System B

• Same gravitational attraction fro System A and System B

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Mass and weight are different. Mass depends on _____. Weight depends on _____.

• gravitational force, the amount of matter

• placement, force

• force, placement

• the amount of matter, gravitational force

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NGSS.MS-PS2-4

Gravity is an example of which kind of force?

• contact

• noncontact

• speed

• direction

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Gravitational force differs based on two things.

It increases with increasing ___________.

It decreases with increasing __________ .

• mass

  distance

• distance

  mass

• orbit

  displacement

• displacement

  orbit

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NGSS.MS-PS2-4

An object’s weight is _____ its mass

• equal to

• less than

• proportional to

• not related to

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NGSS.MS-PS2-4

A planet is discovered that has twice the mass of Earth but the same gravitational acceleration.

If you weigh 700 N on Earth, on the new planet you would weigh ____ N.

• 700 N

• 1400 N

• 7 N

• 70 N

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What is the formula to calculate Weight from mass(m) and gravity (g) ?

• mass (m) / gravity (g) = weight

• mass (m) + gravity (g) = weight

• mass (m) - gravity (g) = weight

• mass (m) x gravity (g) = weight

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NGSS.MS-PS2-4

Which planet has the weakest gravitational pull?

• Earth

• Mercury

• Jupiter

• Venus

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