Force and Gravity

Four objects are dropped from a height of 10 feet. Which object will hit the ground first?

• Golf ball

• foam ball

• sheet of notebook paper

• feather

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When objects are dropped from the same height, the object with the most ________ will hit the ground first.

• volume

• surface area

• mass

• air resistance

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The greater the __________ of an object, the slower it will fall.

• mass

• force

• volume

• surface area

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NGSS.MS-PS2-2

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Two people go sky diving. Bob has a mass of 150 kg and Jack has a mass of 75 kg. Who will land on the ground first?

• Bob, because he has more mass.

• Jack, because he has more mass.

• Jack, because he has less mass.

• Bob, because he has more surface area.

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NGSS.MS-PS2-4

Two cars are traveling down the highway. They are exactly the same. Which will travel FARTHER before stopping, a car going 50 MPH or a car going 25 MPH?

• The car going 25 mph, because it is going slower.

• The car going 25 mph, because it has more mass.

• The car going 50 mph, because it is going faster.

• The car going 50 mph, because it has more surface area.

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What force holds the Earth's atmosphere in place?

• magnetic

• gravity

• electric

• friction

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A box scooting slower across carpet and faster across tile floors is an example of

• gravity

• friction

• air resistance

• surface area

Which object has more gravitational force?

• a soccer ball

• a foam ball

• a basketball

• a bowling ball

Tags

NGSS.MS-PS2-4

Bob throws a football with the force of 15 newtons. Jack throws a football with the force of 20 newtons. Whose football will go farther?

• Jack's

• Bob's

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NGSS.MS-PS2-2

Bob and Jack are driving the exact same car and going the exact same speed. Bob pushes on the brakes with a lot of force. Jack pushes on the brakes with a little force. Who will travel the SHORTEST distance before stopping?

• Bob

• Jack

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NGSS.MS-PS2-2