Newton's First Law of Motion

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 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 state of motion.

Front

What kinds of objects have inertia?

Back

All objects with mass.

Front

What is friction?

Back

A force that opposes, or pushes back against, an object moving past another object.

Front

What happens to an object when no net force acts on it?

Back

It will maintain its current state of motion, either at rest or moving at a constant velocity.

Front

What is a net force?

Back

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

Front

What does it mean for forces to be balanced?

Back

The forces acting on an object are equal in size and opposite in direction, resulting in no change in motion.

Front

What does it mean for forces to be unbalanced?

Back

The forces acting on an object are not equal, causing the object to accelerate in the direction of the net force.

Front

If an object is moving to the right and a force is applied to the left, what will happen?

Back

The object will slow down, stop, or change direction depending on the strength of the forces.

Front

What is an example of an object with high inertia?

Back

A heavy truck, because it requires a large force to change its motion.