Newton's 3rd Law Quiz

What is Newton's 3rd law of motion?

• Newton's 3rd law of motion does not exist.

• For every action, there is an unequal and opposite reaction.

• For every action, there is an equal and opposite reaction.

• The reaction is always greater than the action.

If a book is placed on a table, what is the action and reaction pair according to Newton's 3rd law?

• The book exerts a downward force on the table, and the table exerts a downward force on the book

• The book exerts an upward force on the table, and the table exerts a downward force on the book

• The action and reaction pair is the book exerting a downward force on the table, and the table exerting an equal and opposite upward force on the book.

• The book exerts no force on the table, and the table exerts an upward force on the book

When a person jumps off a boat, why does the boat move in the opposite direction?

• The boat is propelled by the wind

• Newton's third law of motion

• The boat is pushed by the water

• The boat is attracted to the person

Explain the action and reaction pair when a person walks on the ground.

• The action is the person pushing the ground backward with their foot, and the reaction is the ground pushing the person forward with an equal force.

• The action is the person floating above the ground, and the reaction is the ground pushing the person downward with an equal force.

• The action is the person pulling the ground forward with their foot, and the reaction is the ground pulling the person backward with an equal force.

• The action is the person standing still on the ground, and the reaction is the ground moving the person forward with an equal force.

Why does a rocket move upwards when the engines expel gas downwards?

• The rocket moves upwards due to the equal and opposite reaction of the gas being expelled downwards.

• The rocket moves upwards because of the wind pushing it from below.

• The rocket moves upwards because of the gravitational pull from the Earth.

• The rocket moves upwards due to the magnetic force between the rocket and the Earth.

What happens to the force exerted by the first object on the second object in an action-reaction pair?

• It is greater in magnitude and opposite in direction

• It is equal in magnitude and same in direction

• It is smaller in magnitude and same in direction

• It is equal in magnitude and opposite in direction

Explain the action and reaction pair when a ball hits a wall.

• The action is the ball exerting force on the wall, and the reaction is the wall exerting an equal and opposite force on the ball.

• The action is the wall exerting force on the ball, and the reaction is the ball exerting an equal and opposite force on the wall.

• The action is the ball bouncing off the wall, and the reaction is the wall absorbing the impact.

• The action is the ball slowing down upon hitting the wall, and the reaction is the wall gaining momentum.

What is the action and reaction pair when a bird flies?

• The action is the bird flapping its wings downward and the reaction is the air pushing the bird upward.

• The action is the bird flapping its wings upward and the reaction is the air pushing the bird downward.

• The action is the bird moving forward and the reaction is the air moving backward.

• The action is the bird flapping its wings and the reaction is the bird moving forward.

How does Newton's 3rd law apply when a person swims in a pool?

• When a person swims, they push the water backward, and the water pushes the person forward with an equal force.

• When a person swims, they push the water downward, and the water pushes the person upward with an equal force.

• When a person swims, they push the water forward, and the water pushes the person backward with an equal force.

• When a person swims, they do not exert any force on the water.

What is the action and reaction pair when a hammer hits a nail?

• The action is the hammer exerting force on the nail, and the reaction is the nail exerting an equal and opposite force on the hammer.

• The action is the nail exerting force on the hammer, and the reaction is the hammer exerting an equal and opposite force on the nail.

• The action is the hammer slowing down upon hitting the nail, and the reaction is the nail gaining momentum.

• The action is the hammer bouncing off the nail, and the reaction is the nail absorbing the impact.