Newton's First Law - Review

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 unbalanced force.

Front

What is inertia?

Back

Inertia is an object's resistance to a change in motion. Objects in motion stay in motion, and objects at rest stay at rest.

Front

What happens to a passenger in a car that suddenly stops?

Back

The passenger continues moving forward due to inertia until an unbalanced force (like a seatbelt) acts on them.

Front

What is an unbalanced force?

Back

An unbalanced force is a force that causes an object to change its state of motion.

Front

How does mass affect inertia?

Back

Objects with greater mass have greater inertia, meaning they require more force to change their motion.

Front

If a bike is moving at 15 mph and hits a curb, what happens to the rider?

Back

The rider keeps moving forward at 15 mph while the bike stops at the curb.

Front

What is the relationship between speed and inertia?

Back

Speed does not directly affect inertia; inertia is primarily related to mass.

Front

What is a balanced force?

Back

Balanced forces are equal in size and opposite in direction, resulting in no change in motion.

Front

Give an example of an unbalanced force in everyday life.

Back

A car accelerating or braking is an example of an unbalanced force acting on the vehicle.

Front

What is the effect of friction on motion?

Back

Friction is a force that opposes motion, acting as an unbalanced force that can slow down or stop moving objects.