Force and Motion Review

What is Newton's First Law

• F=ma
• Every action has an equal and opposite reaction
• An object at rest stays at rest, an object in motion stays in motion. 
• Friction 

Why does an 18-wheeler have more inertia than a bicycle?

• it has more mass
• it has more volume
• it is not as aerodynamic

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Are forces balanced or unbalanced when a marble speeds up rolling down a ramp? P. 27 in science notebook

• Balanced
• Unbalanced

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Another name for air resistance is...

• Buoyancy

• Streamline

• Gravity

• Drag

Air resistance is a force caused by...

• Water pushing against moving objects

• Air pushing against moving objects

• Gravity pushing against moving objects

• Normal force pushing against moving objects

Which model has greater gravitational attraction (if any)

• Model A
• Model B
• Both Model A and Model B (same gravity)

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If the man pushes with an equal amount of force, which object will accelerate more?

• Car because it has more mass

• Lawnmower because it has less mass

• Car because it has less mass

• Lawnmower because it has more mass

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The larger the mass you have the _____ force you need to change its motion.

• more
• less

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A force of 90N is applied to each cart below, which one will accelerate the fastest?

• Cart 1
• Cart 2
• Cart 3 
• Cart 4

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Which has the MOST inertia?

• 
• 
• 
• 

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