Types of Forces

Front

What is a force?

Back

A force is a push or pull that can change the motion of an object.

Front

What are contact forces?

Back

Contact forces are forces that occur when two objects are physically touching each other.

Front

What are noncontact forces?

Back

Noncontact forces are forces that act on an object without physical contact, such as gravity and magnetism.

Front

What is gravity?

Back

Gravity is a noncontact attractive force that pulls objects toward each other, especially towards the center of the Earth.

Front

What is an example of a noncontact force?

Back

An example of a noncontact force is gravity.

Front

What happens to objects with mass in relation to each other?

Back

Any object with mass is attracted to any other object with mass.

Front

What is the effect of mass on gravitational pull?

Back

The greater the mass of an object, the stronger its gravitational pull.

Front

What is friction?

Back

Friction is a contact force that resists the sliding motion of two surfaces that are in contact.

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 is an example of a contact force?

Back

An example of a contact force is pushing a door open.