3.7 Newton's Third Law

Front

What does Newton's Third Law state?

Back

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

Front

What is the relationship between forces according to Newton's Third Law?

Back

Forces always come in pairs.

Front

True or False: You can't exert a force on anything unless it also exerts a force on you.

Back

True.

Front

Why can't you tell that the Earth has moved when you jump up?

Back

The Earth has much more mass, so its acceleration is very small.

Front

When two objects collide, do they exert the same force on each other?

Back

Yes, they exert the same force on each other.

Front

What is an example of action and reaction forces when walking?

Back

When you push your foot backward against the ground, the ground pushes your foot forward.

Front

What happens to the acceleration of an object when a larger force is applied?

Back

The acceleration increases.

Front

What is inertia?

Back

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

Front

How does mass affect the force of gravity on an object?

Back

The greater the mass of an object, the greater the gravitational force acting on it.

Front

What is the formula for calculating force?

Back

Force = mass × acceleration (F = ma).