Force and Motion Review

The amount of matter in something.

• Force

• Mass

• Volume

• Density

A push or a pull on an object.

• Speed

• Motion

• Pizza

• Force

The distance something travels over time.

• Speed

• Acceleration

• Motion

• Force

An object's speed and direction.

• Acceleration

• Speed

• Motion

• Velocity

Answer explanation

The difference between speed and velocity is that velocity includes a direction!

A force that results in a change in motion.

• Unbalanced Force

• Balanced Force

• Velocity

• Speed

Answer explanation

Think of two people with different mass on a seesaw. They are out of balance, which means the seesaw will move!

A force that does not result in a change in motion.

• Unbalanced Force

• Balanced Force

• Acceleration

• Motion Force

Answer explanation

Think of two people with equal mass sitting on a seesaw. They are in balance, and they will not move.

A force resulting from two surfaces sliding against each other.

• Motion

• Friction

• Sliding Force

• Acceleration

Answer explanation

the force of friction always moves AGAINST the motion of the object it is acting on!

Objects in motion tend to stay in motion, and objects at rest tend to stay at rest, unless acted on by an unbalanced force.

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

• Newton's Fourth Law of Motion

Answer explanation

There is no fourth Law of Motion. :)

The force applied to an object is the product of the object's mass and its acceleration.

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

• Newton's Fourth Law of Motion

Answer explanation

Remember, F = ma! (Your "ma" is a "force" to be reckoned with!)

When objects collide, they exert forces on each other. These forces are equal in strength but opposite in direction.

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

• Newton's Fourth Law of Motion

Answer explanation

For every action, there is an equal but opposite reaction.