Newton's 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 at a constant velocity 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

What kind of objects have inertia?

Back

All objects with mass.

Front

What happens to an object in motion if no net force acts on it?

Back

It continues to move at a constant speed in a straight line.

Front

What is a net force?

Back

The overall force acting on an object when all the individual forces are combined.

Front

What is the relationship between mass and inertia?

Back

Objects with greater mass have greater inertia.

Front

What is an unbalanced force?

Back

A force that causes a change in the motion of an object.

Front

If two forces of 15 N are acting in the same direction, what is the net force?

Back

30 N in the direction of the forces.

Front

If a car is moving at a constant speed, what can be said about the forces acting on it?

Back

The net force acting on the car is zero.

Front

What is the effect of balanced forces on an object?

Back

Balanced forces do not change the motion of an object.