Unit 3 Semester Test

Front

What is Newton's 3rd Law of Motion?

Back

Every action has an equal, but opposite reaction.

Front

What is a force?

Back

A force is the PUSH or PULL on an object.

Front

What does it mean for forces to be balanced?

Back

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

Front

What is Newton's 1st Law of Motion?

Back

An object at rest stays at rest, and an object in motion stays in motion unless acted upon by a net external force.

Front

What is the relationship between mass and force needed to change motion?

Back

The smaller the mass, the less force you need to change its motion.

Front

What is inertia?

Back

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

Front

What is Newton's 2nd Law of Motion?

Back

The acceleration of an object depends on the mass of the object and the amount of force applied (F=ma).

Front

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

Back

It continues to move at a constant velocity.

Front

What is an example of an unbalanced force?

Back

A soccer ball being kicked is an example of an unbalanced force.

Front

How does mass affect acceleration?

Back

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