Newton's Laws

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 at a constant velocity unless acted upon by a net 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 does 'balanced forces' mean?

Back

Forces that are equal in size and opposite in direction, resulting in no change in motion.

Front

What does 'unbalanced forces' mean?

Back

Forces that are not equal and opposite, resulting in a change in motion.

Front

Give an example of balanced forces.

Back

A book resting on a table.

Front

Give an example of unbalanced forces.

Back

A pencil being knocked off a desk.

Front

What happens to an object in motion if no net force acts on it?

Back

It continues to move at the same speed and in the same direction.

Front

What is inertia?

Back

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

Front

How does mass affect acceleration according to Newton's Second Law?

Back

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