When a car suddenly stops, the person inside keeps moving forward. Which of Newton's Laws of Motion explains this?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law 

• Newton's 4th Law

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NGSS.MS-PS2-1

What kind of force is Spiderman using to hang from his web and stay off the ground?

• friction

• tension

• gravity

• normal

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NGSS.MS-PS2-1

A magician quickly pulls a tablecloth out from under plates and cups, but the plates and cups stay in place. What law of motion explains why the dishes don't move?

• Newton's 1st Law

• Newton's 2nd Law

• Newton's 3rd Law

• Can't reveal the secret!

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NGSS.MS-PS2-1

What is the word for an object's tendency to keep doing what it is already doing, whether moving or staying still?

• Friction

• Inertia

• Force

• Gravity

What force pushes things together and makes them smaller?

• Torsion

• Compression

• Shear

• Elasticity

Which of Newton's Laws of Motion is best illustrated by the picture?

• 1st Law
• 2nd Law
• 3rd Law
• None of these

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NGSS.MS-PS2-1

An ewok threw a rock at a stormtrooper with a force of 24.6 N. If the rock's acceleration was 6 m/s², what is the mass of the rock?

• 4 kg

• 41 kg

• 4.1 kg

• 4.6 kg

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

What happens when a force pushes on an object that is not moving?

• The object stays still

• The object moves in a random direction

• The object moves in the direction of the force

• The object moves in the opposite direction of the force

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NGSS.MS-PS2-2

You push on a tree with 20 N of force. If the tree does not move, how much force is the tree pushing back with?

• 20N

• 10N

• 40N

• 70N

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NGSS.MS-PS2-1

A wagon has a mass of 40 kg and accelerates at 8 m/s². What is the force acting on the wagon?

• 38.25 kg

• 320 N

• 5 N

• 3.825 kg

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NGSS.MS-PS2-2