Newton's First law

Front

What is Newton's First Law of Motion?

Back

An object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity unless acted upon by a net external force.

Front

What is inertia?

Back

The tendency of an object to resist changes in its motion.

Front

What is a reference direction?

Back

A given direction from a starting point to describe an object's position.

Front

What are balanced forces?

Back

Combined forces that form a net force of zero.

Front

What happens to an object in motion if no external force acts on it?

Back

It will continue to move at a constant velocity.

Front

What is net force?

Back

The overall force acting on an object when all the individual forces are combined.

Front

What is an example of an unbalanced force?

Back

A person pushing a stationary car, causing it to move.

Front

How does friction affect motion?

Back

Friction opposes the motion of an object, causing it to slow down or stop.

Front

What is the relationship between mass and inertia?

Back

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

Front

What is an example of inertia in everyday life?

Back

A passenger lurching forward in a car when it suddenly stops.