Newton's Laws of Motion quiz

An object and rest will stay at rest and an object in motion will stay in straight line motion unless acted on by a force, is which one of Newton's Laws of Motion?

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

 What is the unit for force?

• Isaac
• Sir
• Newton
• Kilogram

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

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-PS2-2

If a 10 kilogram object accelerates suddenly at 15 m/s², how much force was applied to the object? (Hint: F= M x A)

• 150 Newtons

• 15 Newtons

• 150 kilograms

• 100 kilograms

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NGSS.MS-PS2-2

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

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

You are driving a 2400 kg car along a flat straight road. Since there is no one around, you decide to stomp the accelerator causing the car's engine to push the car forward with 8400 N of force. After you have been accelerating for a short time, you reach a speed of 25 mph. At this moment a stiff breeze pushes back on your car with 8400 N of force. Assuming the engine is still pushing your car forward. Describe what will happen to your car's motion while the breeze is blowing.

• It will continue to accelerate.

• It will begin to slow down and eventually come to a stop.

• It will begin to slow down, but will never come to a complete stop.

• It will continue moving at a constant velocity for as long as the breeze continues to blow.

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NGSS.MS-PS2-2

If a cannonball were launched into deep space (no friction or gravitational effects), how much force would be needed to keep the ball moving with a constant velocity?

• A force equal to its weight.

• No force would be needed.

• A force large enough to balance friction.

• 150-N

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NGSS.MS-PS2-2

What does Newton’s First Law say about an object moving with a constant speed and direction?

• It has no net force acting on it.

• It has no forces acting on it.

• It must have a net force acting on it.

• Nothing, because Newton’s First Law only applies to objects at rest.

A person is pushing their car forward with 1000 N of force causing it to speed up. After a while the car enters some mud which applies 1000 N of force in the opposite direction. At this point what will happen to the car?

• It will stop immediately.

• It will slow down and eventually stop.

• It will move with a constant speed and direction.

• It will continue to speed up, just not as quickly.

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