Forces & Newton's Laws

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 with the same speed and in the same direction unless acted upon by an unbalanced 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 happens when forces are balanced?

Back

The object remains at rest or continues to move at a constant velocity.

Front

What happens when forces are unbalanced?

Back

The object will accelerate in the direction of the net force.

Front

How do you calculate net force when two forces act in the same direction?

Back

Add the magnitudes of the two forces.

Front

How do you calculate net force when two forces act in opposite directions?

Back

Subtract the smaller force from the larger force.

Front

What is the unit of force?

Back

Newton (N)

Front

What is inertia?

Back

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

Front

What is the relationship between mass and acceleration according to Newton's 2nd Law?

Back

As mass increases, acceleration decreases if the net force remains constant.