Gravity 8th Grade

Which action will decrease the gravitational force between two objects?

• Reducing the masses of the objects

• Moving the objects closer together

• Adding mass to one of the objects

• Increasing the charge on one of the objects

The gravitational pull of the Moon is much less than the gravitational pull of Earth. An object with a mass of 50 kilograms weighs about 18 pounds on the Moon.

Which statement describes the object on Earth?

• It would have less mass.

• It would weigh more.

• It would have the same weight.

• It would have more mass.

Which factor affects an object's weight but not its mass?

• Conductivity

• Volume

• Magnetism

• Gravity

The diagram shows a ball falling toward Earth in a vacuum. Change in v = 9.8 m/s² × t.

What is the velocity of the ball at 4 seconds?

• 9.8 m/s

• 19.2 m/s

• 39.2 m/s

• 58.8 m/s

The photos show four pairs of objects.

Which pair of objects is experiencing the greatest gravitational force?

• The person and the dog

• The person and the building

• The person and Earth

• The person and the ball

Which pair of objects is experiencing the greatest gravitational force?

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