Newton's Three Laws Review

An object at rest will stay at rest and an object in motion will stay in straight line uniform motion unless acted on by a force. Which one of Newton's Laws of Motion is this statement?

• 4th Law of Motion
• 1st Law of Motion
• 3rd Law of Motion
• 2nd Law of Motion

Which law explains when a magician pulls a tablecloth out from under dishes and glasses on a table without disturbing them.

• Law 1
• Law 3

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NGSS.MS-PS2-1

A person steps out of the boat and onto the dock.  As the person moves forward onto the dock, the boat moves backward.  Which statement best describes the backward motion of the boat as the person steps forward?

• For every action there is an equal  and opposite reaction.
• Every mass exerts a force on every other mass.
• An object at rest tends to stay at rest.
• Friction opposes the motion of an object.

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NGSS.MS-PS2-1

 What is the unit for force?

• Isaac
• Sir
• Newton
• Kilogram

Speed in a direction is called

• Momentum
• Velocity
• Speed
• Inertia

Which law explains why when you put a book on a table the table pushes on the book

• 3rd law
• 4th law
• 1st law
• 2nd law

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NGSS.MS-PS2-1

If a 10 kilogram object accelerates suddenly at 15 m/s², how much force was applied to the object?

• 150 Newtons
• 15 Newtons
• 150 kilograms
• 100 kilograms

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NGSS.MS-PS2-2

Why is the net force 0 in the image?

• Because the elephants are the same size
• Because they are both pulling the same amount of force in opposite directions.
• Because they are elephants
• Because they are pulling away from each other.

Tags

NGSS.MS-PS2-1

What is the speed of an object that travels 20 meters in 4 seconds?

• 80 m/s
• 0.2 m/s
• 5 m/s
• 24 m/s

Tags

NGSS.MS-PS3-1

Newton's 1st law is often called the _______.

• Newton's 2nd law
• action-reaction law
• law of equality
• law of inertia