First Law of Motion

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 an object's resistance to changes in its state of motion.

Front

True or False: An object with more mass has more inertia.

Back

True

Front

What happens to an object at rest when no unbalanced force acts on it?

Back

It remains at rest.

Front

What happens to an object in motion when no unbalanced force acts on it?

Back

It continues to move at a constant velocity.

Front

Why does a truck have more inertia than a bicycle?

Back

Because it has more mass.

Front

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

Back

The more mass an object has, the more force is needed to change its motion.

Front

Give an example of an object at rest that will remain at rest.

Back

A book lying on a table.

Front

Give an example of an object in motion that will continue in motion unless acted upon by an unbalanced force.

Back

A soccer ball rolling on a field.

Front

What is an unbalanced force?

Back

A force that causes an object to change its state of motion.