Motion and Forces Review

Changing direction, slowing down or speeding up are all examples of _______________________.

• a.       Momentum
• b.       Motion
• c.       Acceleration
• d.       Inertia

Speed equals distance divided by __________________.

• a.       Time
• b.       Meters
• c.       seconds

The force that pulls objects to Earth is called ______________________.

• a.       Friction
• b.       Magnetism
• c.       Gravity
• d.       Inertia

Force = Mass x _______________________ (Newton’s 2nd law)

• a.       Speed
• b.       Gravity
• c.       acceleration
• d.       momentum

Newton’s _________Law of Motion is states that an object at rest will stay at rest, and an object in motion will stay in motion, unless acted on by an outside force.

• a. First
• b. Second
• c. Third

“For every action there is an equal and opposite reaction” is known as Newton’s ___________ law of motion.

• a. First

• b. Second

• c. Third

When net forces acting on an object equal zero, the forces are considered __________________.

• a.       Unbalanced
• b.       Balanced
• c.       In motion

A push or pull on an object is called what?

• friction
• gravity
• inertia
• force

What kind of forces are being applied in the picture?

• unbalanced forces
• gravitational forces
• balanced forces

When comparing force and friction, in order to move an object across the floor, the force ______.

• must be balanced with the floor's friction.
• must be less than the floor's friction.
• must be greater than the floor's friction.