Force and Motion review

What would you need to move a soccer ball?

• friction

• gravity

• inertia

• force

Answer explanation

Remember, a FORCE is a push or a pull

Which of these is an example of force?

• watching a slice of bread in the toaster.

• pulling a casserole out of the oven.

• listening to your school chorus.

• taste testing soup cooking on the stovetop.

Which object would require the most anount of energy, or force, to set it into motion?

• a school bus

• a refrigerator

• a microwave

• a houseplant

Your older brother tells you his paper airplane has inertia. What does this mean?

• It has too much resistance to fly more than a few feet from his hand.

• It is too heavy to stay in the air for more than a few seconds.

• It will require a lot of force to get it to fly.

• It will stay in flight unless something stops it, or it will stay still unless something moves it.

Why don't skateboarders keep flying through the air when they launch off of a ramp?

• The force of gravity works against the skateboarders' inertia.

• Skateboard wheels don't spin fast enough to keep them moving very far.

• The skateboarders have no inertia when they launch off of a ramp.

• Skateboards do not use Newtons to move around a ramp.

What is the name of the unit we use to measure force?

• Neutron

• Norton

• Nucleus

• Newton

What is an example of friction?

• Slipping on a patch of ice.

• Dropping a book on the floor.

• Diving into a swimming pool.

• Wind blowing against you as you walk.

During P.E., your soccer ball collides with the goalie. What happems to the soccer ball?

• It stops moving completely.

• It accellerates at the same rate and in the same direction as the goalie.

• It accellerates more and in a different direction than the goalie.

• It continues moving at the same velocity as before.

A softball and volleyball collide with equal speed, and then they accellerate at the same rate. What must be true about the masses of the objects?

• The softball has more mass than the volleyball.

• The softball and the volleyball have equal masses.

• The volleyball has more mass than the softball.

• It is impossible to compare the mass of the softball to the volleyball.

When two objects with unequal mass collide, what will they do?

• Accellerate at different rates.

• Accellerate in the same direction.

• Come to a complete stop.

• Continue at the same velocity.