force and motion

Kinetic energy is __________________ energy. 

• potential 
• stored
• moving
• waiting to be released 

Kinetic energy is...

• energy carried in ultraviolet waves

• energy stored in food

• energy in motion

• energy from splitting an atom

The faster an object moves, the ________ kinetic energy it has.

• more

• less

• none of the above

• all of the above

Which of the following are examples of kinetic energy? (check all that apply)

• an arrow flying through the air

• a book on a shelf

• kicking a soccer ball

• chewing gum

• sitting at a stop light

Click to look at the picture.

The picture is an example of _____ .

• gravity

• potential energy

• kinetic energy

• friction

What is energy?

• something that picks up things, like a magnet.

• Motion of an object

• ability to do work

• magic rays of sunshine that come down when you're feeling blue.

Which of the following statements is correct?

• The car has less kinetic energy because it has more mass than the girl.

• The car has the most kinetic energy because it has more mass than the girl.

• The car and the girl have the same amount of kinetic energy because they are moving at the same speed.

• The girl has the most kinetic energy because she has less mass than the car.

What can you say about the potential energy of the two sleds shown above?

• Sled B has more potential energy.

• There is not enough information to know which sled has more potential energy.

• The two sleds have the same potential energy.

• Sled A has more potential energy.

Why does a soccer ball eventually stop rolling once it’s kicked on a grassy field?

• none of these

• Gravity acts upon it.

• Light acts upon it.

• Friction acts upon it.

When objects remain in the same place, it is called...

• gravity
• friction
• balanced force
• unbalanced force