Forces

Front

What happens to the motion of an object if more force is applied in the same direction?

Back

The motion of the object increases.

Front

What is a measure of the amount of matter in an object?

Back

Mass

Front

What type of force is demonstrated when a magnet picks up iron filings?

Back

A noncontact force.

Front

If you push a wheelbarrow with the same force but add more mass, what happens to its motion?

Back

The motion will decrease.

Front

What two forces act on a softball as it flies and then hits the ground?

Back

Gravity and friction.

Front

What is force?

Back

A push or pull on an object.

Front

What is gravity?

Back

A force that pulls objects toward each other, especially towards the Earth.

Front

What is friction?

Back

A force that opposes the motion of an object when it comes into contact with another surface.

Front

What is the difference between contact and noncontact forces?

Back

Contact forces require physical touch, while noncontact forces act at a distance.

Front

What is inertia?

Back

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