Force and Motion

A car traveling at 90 kilometers/hour when it suddenly stops. The passengers in the car will

• continue to move in a straight line and will slide forward in the car.

• come to a stop at the same time the car stops

• be pushed against the door on the passenger side

• be pushed against the door on the driver's side

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The force that keeps satellites in orbit around Earth is

• magnetic

• friction

• electrical

• gravity

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Person on the left = 45 N

Person on the right = 32 N

What is the net force?

• zero N

• 10 N

• 77 N

• 13 N

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Which force produces a change in motion?

• unbalanced force

• balanced force

• gravitational force

• frictional force

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Two girls are pulling on opposite ends of a thick rope. Both girls pull on the rope with the same force but in opposite directions. If both girls continue to pull with the same force, what will most likely happen?

• One girl will pull the other toward her.

• Both girls will stay in the same place. 

• Gravity will cause the rope to sag. 

• The rope will break.

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If an unbalanced force acts on a stationary object, the object will:.

• remain stationary

• move away from the force

• accelerate in the direction of the force

• accelerate in the opposite direction of the force

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What will the net force on the soccer ball be?

• 50 N to the left

• 50 N to the right

• 200 N to the left

• 200 N to the right

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What is the net force on the car?

• 400 N forward (left)

• 0 N (balanced forces)

• 200 N forward (left)

• 200 N backward (right)

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______________________ is any push or pull on an object.

• force

• mass

• gravity

• air resistance

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Which scientist gave us the laws of motion?

• George Washington

• John Adams

• Sir Isaac Newton

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