Review: Newton's First Law (Balanced & Unbalanced Forces)

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 with the same speed and in the same direction unless acted upon by an unbalanced force.

Front

What are balanced forces?

Back

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

Front

What are unbalanced forces?

Back

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

Front

Give an example of balanced forces in everyday life.

Back

Pushing a stationary object with the same force from opposite directions.

Front

Give an example of unbalanced forces in everyday life.

Back

Pushing a door open.

Front

How do you calculate the net force when forces are acting in opposite directions?

Back

Subtract the magnitude of the smaller force from the larger force.

Front

How do you calculate the net force when forces are acting in the same direction?

Back

Add the magnitudes of the individual forces together.

Front

What happens to an object when the net force acting on it is zero?

Back

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

Front

What is inertia?

Back

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

Front

How does mass affect inertia?

Back

The greater the mass of an object, the greater its inertia.