Newton's 1st & 3rd Law Review

Front

What is Newton's 1st Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion with the same speed and in the same direction unless acted upon by an unbalanced force.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. All objects with mass have inertia.

Front

Give an example of Newton's 1st Law in everyday life.

Back

A coffee cup sliding off a car seat when the car stops suddenly.

Front

What is Newton's 3rd Law of Motion?

Back

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

Front

Provide an example of Newton's 3rd Law.

Back

A rocket taking off: the action is the rocket pushing down on the ground, and the reaction is the ground pushing the rocket upward.

Front

What happens when the action force is greater than the reaction force?

Back

The object experiencing the greater action force will move or fall.

Front

What is the reaction force when a cannon fires a cannonball?

Back

The cannon moving backwards.

Front

What types of objects have inertia?

Back

All objects with mass have inertia, regardless of whether they are at rest or in motion.

Front

How does mass affect inertia?

Back

The greater the mass of an object, the greater its inertia, meaning it will resist changes to its motion more.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its state of motion.