Gravity and Newton's Laws

What is the formula for Newton’s 2nd law of motion?

• F = ma

• E = mc^2

• V = IR

• P = IV

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What is the formula for speed?

• Speed = Distance / Time

• Speed = Time / Distance

• Speed = Distance x Time

• Speed = Distance + Time

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

• weight and time

• distance and mass

• volume and mass

• area and weight

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NGSS.MS-PS2-4

What is the relationship between mass and gravitational pull?

• Lower gravitational pull creates more mass.

• Higher gravitational pull creates more mass.

• Lower mass creates higher gravitational pull.

• Higher mass creates higher gravitational pull.

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The gravitational force exerted by an object depends on its

• volume.

• weight.

• mass.

• size.

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Complete this sentence by choosing the correct second part of the sentence: As distance increases between objects...

• gravitational force increases

• gravitational force stays the same

• gravitational force decreases

• the size of the object increases

Planets X and Y orbit each other in space. Which changes would have the greatest effect on increasing the gravitational attraction between the two planets?

• doubling the mass of planet X and halving the distance between the planets

• halving the mass of planet X and doubling the distance between the planets

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NGSS.MS-PS2-4

Which pair of objects will have the greatest force of gravity between them?

• objects that are small and far apart

• objects that are small and close together

• objects that are large and far apart

• objects that are large and close together

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NGSS.MS-PS2-4

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

• skateboards.

• refrigerators.

• bowling balls.

• school buses.

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NGSS.MS-PS2-4

How do we know our weight would be different on other planets?

• Our mass would stay the same on whatever planet we are on.

• Our weight is a measure of the pull of gravity on an individual object, which would vary on objects' of different masses.

• The greater the mass of an object, the greater the gravitational force and planets have different mass and different gravitational force.

• All of the above are correct.

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