7.1.2 Newton's First Law

Front

What is Newton's First Law of Motion?

Back

An object at rest will remain at rest, and an object in motion will remain in motion at a constant velocity unless acted upon by a net external force.

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. It is directly related to the mass of the object.

Front

What types of objects have inertia?

Back

All objects with mass have inertia.

Front

In a tug of war, if one person pulls with a force of 55 N to the right and another pulls with 65 N to the left, what is the net force?

Back

The net force is 10 N to the left.

Front

What happens to a resting object due to inertia?

Back

A resting object will remain at rest.

Front

When forces are unbalanced, in which direction will the object move?

Back

The object will move in the direction of the larger force.

Front

What is a balanced force?

Back

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

Front

What is an example of an unbalanced force?

Back

An example of an unbalanced force is when one person pulls harder than another in a tug of war.

Front

How does mass affect inertia?

Back

The greater the mass of an object, the greater its inertia, meaning it will be harder to change its state of motion.

Front

What is the relationship between force and motion?

Back

A net force acting on an object causes it to accelerate in the direction of the force.