Force and Motion Review

What is air resistance?

• friction in the air that slows things down
• when an airplane flies into a cloud
• when you feel the air hitting your face

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What does a curved line on a distance-time graph show?

• That the speed is changing. 
• That the object is not moving. 
• That the object is constant. 

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What are EQUAL forces acting on an object in opposite directions that do not change the object's motion?

• Friction
• Weight
• Balanced Forces
• Unbalanced Forces

If an object does not move at all, what does that mean about the forces acting on the object? 

• The forces are balanced. 
• The forces are unbalanced. 

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Is a force that pulls objects toward each other and down to the ground

• Force
• Friction
• Gravity
• weight

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Ted was rolling a pencil on his desk and the pencil fell down to the ground. What force made this occur?

• Magnetism
• Gravity
• Friction

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• 1st
• 2nd
• 3rd

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What law is best described by inertia?

• 1st
• 2nd
• 3rd

• 1st
• 2nd
• 3rd

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NGSS.MS-PS2-1

• 1st
• 2nd
• 3rd

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