Forces and Motion

Front

What is a force?

Back

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

Front

What is motion?

Back

Motion is the change in position of an object over time.

Front

What is Newton's First Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is friction?

Back

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

Front

What is gravity?

Back

Gravity is a force that attracts two bodies towards each other, such as the Earth pulling objects towards its center.

Front

What is mass?

Back

Mass is the amount of matter in an object, usually measured in kilograms.

Front

What is weight?

Back

Weight is the force exerted by gravity on an object, calculated as mass times the acceleration due to gravity.

Front

What is magnetism?

Back

Magnetism is a noncontact force that attracts certain metals, like iron, and is caused by the motion of electric charges.

Front

What happens when two forces of equal strength act in opposite directions?

Back

The object does not move because the forces cancel each other out.

Front

How does increasing force affect motion?

Back

Increasing the force applied to an object will increase its acceleration and can change its motion.