Forces and Motion Quiz

Two forces act on an object. One force has a magnitude of 10 N to the right, and the other has a magnitude of 5 N to the left. What is the net force acting on the object?

• A) 15 N to the right

• B) 5 N to the right

• C) 5 N to the left

• D) 15 N to the left

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NGSS.MS-PS2-2

An object is being pushed to the right with a force of 20 N and to the left with a force of 17 N. What is the net force and direction on the object?

• A) 3 N to the right

• B) 3 N to the left

• C) 37 N to the right

• D) 37 N to the left

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NGSS.MS-PS2-2

Which of the following is an example of Newton's Third Law of Motion?

• A) A ball rolling down a hill

• B) A rocket launching into space

• C) An apple falling from a tree

• D) Ice melting in a glass of water

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NGSS.MS-PS2-1

If two forces, one of 8 N to the east and the other of 3 N to the west, act on an object, what is the net force?

• A) 11 N to the east

• B) 5 N to the east

• C) 5 N to the west

• D) 11 N to the west

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NGSS.MS-PS2-2

Identify the action-reaction pair in the following scenario: A fish swims in water by pushing water backward with its fins.

• A) The fish moves forward, and the water moves backward.

• B) The fish's fins push against the water, and the water pushes against the fins.

• C) The fish eats food, and it gains energy.

• D) The water holds the fish up, and the fish swims through the water.

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NGSS.MS-PS2-1

What is the net force acting on an object if three forces act upon it: 15 N north, 10 N south, and 5 N north?

• A) 10 N north

• B) 10 N south

• C) 0 N

• D) 30 N north

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NGSS.MS-PS2-2

When a person sits on a chair, the force the chair exerts on the person is an example of which of Newton's laws?

• A) First Law of Motion

• B) Second Law of Motion

• C) Third Law of Motion

• D) Law of Universal Gravitation

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NGSS.MS-PS2-2

A car accelerates forward due to a net force acting on it. If the force suddenly stops, what will happen to the car according to Newton's First Law of Motion?

• A) The car will immediately stop.

• B) The car will continue moving forward at a constant speed.

• C) The car will accelerate indefinitely.

• D) The car will reverse direction.

If an object experiences a net force of 0 N, which of the following must be true?

• A) The object is not moving.

• B) The object is moving at a constant velocity.

• C) The object is accelerating.

• D) The object is losing mass.

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NGSS.MS-PS2-2

A book is resting on a table. What forces are acting on the book? Select all that apply.

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