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

Front

What is inertia?

Back

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

Front

How does mass affect inertia?

Back

Objects with more mass have greater inertia, making them harder to speed up or slow down.

Front

What happens to a rider on a bike when it hits a curb?

Back

The rider keeps moving forward at the same speed while the bike stops.

Front

What is an example of inertia in a car crash?

Back

A crash test dummy flying forward when the car crashes is an example of inertia.

Front

What is the relationship between force and motion according to Newton's First Law?

Back

An unbalanced force is required to change the motion of an object.

Front

What is the term for the force that opposes motion between two surfaces?

Back

Friction.

Front

What is the difference between balanced and unbalanced forces?

Back

Balanced forces do not change an object's motion, while unbalanced forces do.

Front

What is an example of balanced forces?

Back

A book resting on a table is an example of balanced forces.

Front

What is the effect of gravity on objects in motion?

Back

Gravity pulls objects toward the Earth, affecting their motion.