Forces and Motion

Front

What is the principle that states an object in motion will stay in motion unless acted upon by a force?

Back

This principle is known as Newton's First Law of Motion, also called the law of inertia.

Front

What is the term for the amount of matter in an object?

Back

Mass.

Front

What force opposes the motion of two objects that are in contact?

Back

Friction.

Front

How can a force change an object's motion?

Back

A force can change an object's motion by changing its direction.

Front

What do we call the change in an object's position?

Back

Motion.

Front

What is the force that pulls objects toward each other, such as the Earth pulling us down?

Back

Gravity.

Front

What is inertia?

Back

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

Front

What is an unbalanced force?

Back

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

Front

What is the difference between mass and weight?

Back

Mass is the amount of matter in an object, while weight is the force of gravity acting on that mass.

Front

What happens to an object at rest when a force is applied?

Back

It will start to move in the direction of the applied force.