Activity: Work, Power,and Energy

In order for work to be done on object, which of the following statements must be true? Check all that apply.

• A force must be acting on an object

• The object must remain still

• The object must be lifted off the ground

• The object must move

Which of the following quantities are measured in joules (J)? Check all that apply.

• Power

• Work

• Energy

• Momentum

When an object stores energy as a result of its position, it has:

• Kinetic Energy

• Power

• Work

• Potential Energy

The energy an object has as a result of its motion.

• Kinetic Energy

• Power

• Work

• Potential Energy

Assuming there are no outside forces, the total mechanical energy of the rollercoaster will:

• Remain constant

• Change depending on the height of the rollercoaster

• Change depending on the speed of the rollercoaster

• More than one of the above

You climb stairs as part of a new workout routine. If you wanted to increase the work you do during your workout, you could: (Check all that apply)

• Run up the stairs faster

• Hold something heavy while you do it

• Go up more stairs

• Hop up the stairs instead of running

Of the following, which would NOT be considered work?

• An Olympic lifter lifting the bar from the ground to their chest

• The lifter taking the bar from their chest to above their head

• Holding the bar above their head with their arms fully extended

• Dropping the bar and letting it fall to the ground

Energy can be defined as the ability to:

• Do work

• Apply a force

• Have power

• Sleep

Which of the following is NOT a fossil fuel?

• Coal

• Uranium

• Oil

• Natural Gas

Which of the following statements are true according to the law of conservation of energy?

• Energy cannot be created

• Energy cannot be destroyed

• Energy can be converted from one form to another

• All of the above