Newtons First Law

Front

What is a force?

Back

A force is a push or a pull on an object.

Front

What happens to a marble traveling on a long, straight path in the absence of friction?

Back

The marble would remain at a constant speed.

Front

What type of force must act on an object in motion for it to stop or change direction?

Back

An unbalanced force.

Front

What is a balanced force?

Back

Forces that have a net force of zero Newtons.

Front

What is the net force of an object that is not moving?

Back

0 N.

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 is an example of an unbalanced force?

Back

A soccer player kicking a ball.

Front

What is friction?

Back

Friction is a force that opposes the motion of an object.

Front

How does friction affect motion?

Back

Friction can slow down or stop the motion of an object.

Front

What is inertia?

Back

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