Newton's laws of motion

Front

What is Newton's 1st 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 Newton's 2nd 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 3rd Law of Motion?

Back

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

Front

What is gravity?

Back

The attractive force that exists between all objects that have mass.

Front

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

Back

The object will not move at all.

Front

Why can't we see the Earth move when we jump?

Back

The Earth has much more mass than we do, so we can't tell that it moved.

Front

What is inertia?

Back

The tendency of an object to resist changes in its state of motion.

Front

What is mass?

Back

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

Front

What is weight?

Back

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

Front

How does mass affect acceleration?

Back

Greater mass results in less acceleration for the same amount of force applied.