Force and Motion Test

What is the definition of a force?

• The change in position an object experiences.

• When an object gains speed in a short amount of time.

• When two surfaces move against one another.

• Energy that it takes to do work. When you push or pull an object.

The force that acts to pull all objects down to Earth is:

• Friction

• Energy

• Magnetism

• Gravity

A force that slows or stops motion when objects rub together is called:

• Friction

• Energy

• Magnetism

• Gravity

A push can be all of the following except -

• Throwing a baseball

• Moving a chair

• Lifting rocks

• Closing a door

Jared wants to test the effect of friction on an object. Which would be the best experiment for him to test this effect?

• Use a pulley to lift several blocks

• Drop a ball from different heights

• Roll a toy car across different surfaces

• Use a balance to find the mass of objects

Renee is throwing a ball high into the air and then catching it. What is the effect of gravity on the ball?

• It increases the mass of the ball

• It pulls the ball back to the ground

• It makes the ball’s speed slow down

• It makes the ball’s speed remain the same

Which surface would probably offer the least friction if you were to slide a box across it?

• Glass

• Wood

• Carpet

• Brick

Which of the following is Newton’s first law of motion?

• For every action, there is an equal and opposite reaction.

• An object in motion will stay in motion, unless acted on by an outside force.

• The more mass an object has, the more force you must use to move it.

Which of the following best describes Newton's third law of motion?

• An object at rest stays at rest unless acted upon by an external force.

• For every action, there is an equal and opposite reaction.

• The acceleration of an object depends on the mass of the object and the amount of force applied.

• The force of gravity acts between all objects in the universe.

A device that makes work easier to do is called a

• Simple machine
• Complex machine

• Velocity

• Force