Newtons First Law

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

Front

How does mass relate to inertia?

Back

Objects with greater mass have greater inertia, meaning they are harder to change their state of motion.

Front

What type of force must act on an object to change its motion?

Back

An unbalanced force.

Front

What is static friction?

Back

Static friction is the force that keeps an object at rest from moving.

Front

What is dynamic (kinetic) friction?

Back

Dynamic (kinetic) friction is the force that opposes the motion of an object that is already moving.

Front

Can an object have inertia if it is not moving?

Back

Yes, all objects with mass have inertia, regardless of whether they are moving or at rest.

Front

What happens to a moving object if no unbalanced force acts on it?

Back

It continues to move at a constant velocity.

Front

What is an example of an unbalanced force?

Back

A push or pull that causes an object to accelerate, such as a person pushing a stationary car.

Front

What is the relationship between mass and acceleration according to Newton's laws?

Back

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