Newton's First Law

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by an unbalanced force.

Front

What does it mean for forces to be balanced?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

Front

What is inertia?

Back

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

Front

What happens to an object in motion when no unbalanced force acts on it?

Back

It continues to move at a constant velocity.

Front

What is the unit of force?

Back

Newton (N) is the unit used to measure force.

Front

If a hockey puck slides on a frictionless surface, will it eventually slow down?

Back

No, it will keep moving indefinitely unless acted upon by an unbalanced force.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to accelerate or change its motion.

Front

Give an example of an unbalanced force.

Back

A person pushing a stationary car to get it moving.

Front

What is the relationship between mass and inertia?

Back

The greater the mass of an object, the greater its inertia.

Front

How does friction affect motion?

Back

Friction is a force that opposes motion, causing objects to slow down or stop.