Force and Motion

Front

What is Force?

Back

A push or pull exerted on an object.

Front

What is Motion?

Back

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 an external force.

Front

What is Newton's Second Law of Motion?

Back

The acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass (F=ma).

Front

What is Newton's Third Law of Motion?

Back

For every action, there is an equal and opposite reaction.

Front

What is Friction?

Back

A force that opposes the motion of an object.

Front

What is Weight?

Back

The force exerted by gravity on an object, calculated as mass times the acceleration due to gravity (W=mg).

Front

What is Mass?

Back

The amount of matter in an object, measured in kilograms.

Front

What is the relationship between mass and weight?

Back

Weight is the force of gravity acting on mass; weight = mass × gravitational acceleration.

Front

What is an example of an action-reaction pair?

Back

When you push against a wall, the wall pushes back with equal force.