Basic Concepts of Forces and Machines

Front

What are forces?

Back

Pushes or pulls that can cause objects to move, stop moving, change speed, or change direction.

Front

What is the difference between contact and non-contact force?

Back

Contact force is caused by contact between objects, while non-contact force does not require contact. An example of non-contact force is magnetism.

Front

What is gravity?

Back

The force or attraction between matter. Gravity is an example of a pulling force.

Front

What is friction?

Back

The action of one surface or object rubbing against another.

Front

What are simple machines?

Back

Devices that change the direction or size of a force.

Front

What are compound machines?

Back

Machines that contain more than one simple machine.

Front

What is net force?

Back

The combination of all the forces acting on an object.

Front

Net Force

Back

The net force is the combination of all the forces acting on an object