Contact and Non-Contact Forces

Front

What is a contact force?

Back

A contact force is a force that occurs when two objects are physically touching each other.

Front

What happens to the Moon if the size of Earth doubled?

Back

The Earth's gravitational pull would increase, pulling the Moon toward it.

Front

Define a non-contact force.

Back

A non-contact force is a push or pull force where the objects are not touching.

Front

What is the amount of matter in an object called?

Back

Mass.

Front

What happens between positively and negatively charged objects?

Back

The positively charged object will be attracted to the negatively charged object.

Front

What is gravity?

Back

Gravity is a force that attracts two bodies toward each other, depending on their masses and the distance between them.

Front

What is friction?

Back

Friction is a contact force that opposes the motion of an object when it is in contact with another surface.

Front

What is the difference between mass and weight?

Back

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

Front

What is an example of a non-contact force?

Back

Magnetic force is an example of a non-contact force.

Front

What is the role of air resistance?

Back

Air resistance is a type of frictional force that opposes the motion of an object through the air.