Force and Motion

Front

What is force?

Back

A push or pull on an object that can cause it to move, stop, or change direction.

Front

What is motion?

Back

The change in position of an object over time.

Front

What is speed?

Back

The distance an object travels per unit of time, often measured in miles per hour (mph) or inches per second (in/s).

Front

What is a non-contact force?

Back

A force that can act on an object without physical contact, such as gravitational force.

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 gravitational force?

Back

The force of attraction between two masses, such as the Earth and an object.

Front

What is an inclined plane?

Back

A flat surface that is tilted at an angle to help lift objects with less effort.

Front

What is a pulley?

Back

A simple machine that uses a wheel and a rope to lift or lower objects.

Front

What is acceleration?

Back

The rate at which an object changes its velocity, which can be an increase or decrease in speed.

Front

What is electric force?

Back

A force that occurs between charged objects, which can attract or repel each other.