Inertia (Newton's First Law)

Inertia is an object's resistance to a change in motion. This means that an object that is in motion will stay in motion and that an object will stay at rest. The only way an object will change motion is if an unbalanced force acts on it. Objects with more mass have more inertia because they take more force to move or stop.

• I don't get it

• GOT IT!

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NGSS.MS-PS2-2

Which one has the LEAST inertia?

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NGSS.MS-PS2-2

Which has the MOST inertia?

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NGSS.HS-PS2-1

Who would cause more damage when leaping over a small building?

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

Which of these has the MOST inertia?

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NGSS.MS-PS2-2

Which has the MOST inertia?

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NGSS.MS-PS2-2

The truck takes a while to come to a complete stop.

• The driver of the truck most likely stopped as soon as the truck stopped

• The driver of the truck most likely launched forward as soon as the truck stopped

The hamster is maintaining his position on the wheel by running at a steady pace. What will happen if the wheel gets jammed and stops abruptly?

• The hamster will also stop abruptly

• The hamster will keep going and eventually fall

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NGSS.MS-PS2-2

Why did the girl fall forward?

• The driver hit the brakes abruptly

• The driver sped up abruptly

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NGSS.MS-PS2-2

NGSS.MS-PS3-1

NGSS.MS-PS3-5

How is she able to maintain this position?

• She is not doing anything

• She is using her muscles to resist gravity

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NGSS.MS-PS2-2

NGSS.MS-PS2-4