Unit 6 Physical Science Practice

A car's engine provides a force of 900 N while the force of air resistance is 350 N in the opposite direction. What is the net force of the car, and which direction will the car move?

• 550 N Forward

• 1250 N Forward

• 500 N Backward

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Picture this scenario. An animal is pushing itself forward with 12 N, Friction is pushing 6 N backward, gravity is pushing down on the animal with 15 N, and the animal is pushing itself up with 15 N. What would be the movement of the animal?

• It moves forward and upward because those are the greatest net forces

• It moves 18N forward because that is the net force

• It only moves forward 6 N because that is the net force forward

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If a soccer ball's mass is 5 Kg and a player who weighs 50 kg kicks the soccer ball forward with a force of 5 N, how much force does the ball exert on the players foot and in which direction?

• 100 N Backward

• 5 N backward

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A toy helicopter flies forward with a force of 25 N into an oncoming wind of 10 N. The force of gravity pulls the helicopter down with 5 N of force, but the propellors provide an upward force of 15 N. Which correctly explains the helicopters movement due to the net forces?

• The toy helicopter is flying forward with a force of 25 N and upward with a force of 20 N

• The toy helicopter is flying forward with a force of 35 N and upward with a force of 20 N

• The helicopter is flying forward with a force of 15 N and upward with a force of 10 N

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Increasing friction allows you to move something with less force.

• True

• False

Force is measured in:

• Grams

• Newtons

• Seconds

This diagram is an example of a Balanced Force Diagram or an Unbalanced Force Diagram

• Unbalanced Force Diagram

• Balanced Force Diagram

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Is this diagram an example of balanced force or unbalanced force?

• Unbalanced Force

• Balanced Force

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• This is an example of Newton's First Law.
• This is an example of Newton's Second Law.
• This is an example of Newton's Third Law.

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• This is an example of Newton's First Law.
• This is an example of Newton's Second Law.
• This is an example of Newton's Third Law.

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