Newton's 3rd Law

Front

What is Newton's 3rd Law of Motion?

Back

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

Front

If a bus hits a bug, which force is greater?

Back

They're the same.

Front

What prevents a book from falling through a table when gravity pulls it down?

Back

The table pushes back up on the book with an equal and opposite force.

Front

What does it mean when we say forces are equal and opposite?

Back

It means that when one object exerts a force on another, the second object exerts a force of the same size but in the opposite direction.

Front

What happens when a person steps out of a boat onto a dock?

Back

The boat moves backward due to the equal and opposite reaction of the person stepping forward.

Front

True or False: When a small car pushes a big truck, the truck applies a greater force on the car.

Back

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

Front

What is an example of Newton's 3rd Law in everyday life?

Back

When you jump off a small boat, the boat moves backward as you move forward.

Front

What is the role of friction in motion according to Newton's laws?

Back

Friction opposes the motion of an object.

Front

How does Newton's 3rd Law apply to rocket propulsion?

Back

Rockets push exhaust gases downwards, and in response, the rocket is propelled upwards.

Front

What is inertia in the context of Newton's laws?

Back

Inertia is the tendency of an object to resist changes in its state of motion.