Newton's 1st Law - The Law of Inertia

What is Newton's First Law known as? The Law of

• Friction

• Mass

• Inertia

• Gravity

What kind(s) of objects have inertia?

• all objects with mass

• only objects at rest

• only objects in motion

• only objects whose motion is being changed

One object has twice as much mass as another object. The first object also has also twice as much...

• velocity
• gracitational acceleration
• inertia
• all of these

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Which has more Inertia on the Moon?

• Elephant

• Human

• They would have the same amount as one another

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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?

• Balanced
• Unbalanced

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What is the net force?

• 400 N Up
• 400 N Down
• - 400 N Down
• 800 N Down

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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 

After a cannonball is fired into frictionless space, the amount of force needed to keep it going equals

• twice the force with which it was fired

• the same amount of force with which it was fired

• 1/2 the force with which it was fired

• zero, since no force is requires to keep it moving.

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NGSS.MS-PS2-2

What is inertia?

• the force that opposes motion
• the force of attraction between 2 objects
• an object's tendency to stay in motion or to stay at rest
• a change in an object's speed and/or direction

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