Newtons 3rd Law and Force Pairs

Front

What is Newton's Third Law of Motion?

Back

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

Front

What are action-reaction force pairs?

Back

Forces that two objects exert on each other that are equal in magnitude and opposite in direction.

Front

Can action-reaction pairs cause a change in motion?

Back

Yes, they can cause a change in motion of the objects involved.

Front

In the cannon and cannonball example, what is the action force?

Back

The cannon firing the cannonball.

Front

In the cannon and cannonball example, what is the reaction force?

Back

The cannon moving backwards.

Front

If a book exerts a downward force of 5N on a table, what force does the table exert on the book?

Back

The table exerts an upward force of 5N on the book.

Front

What happens when a small car pushes a big truck?

Back

The truck applies an equal and opposite force on the car.

Front

True or False: All forces occur in pairs.

Back

True.

Front

What is an example of an action-reaction pair in everyday life?

Back

Walking: your foot pushes backward on the ground, and the ground pushes your foot forward.

Front

How do action-reaction pairs affect motion?

Back

They can change the motion of the objects involved, but they do not cancel each other out.