Unit # 1 Work and Energy

What is the unit used to measure work?

• Joule

• Watt

• Newton

• Pascal

 Work done = Force x _________

• a. distance
• b. acceleration
• c. velocity
• d. speed

What kind of energy is in a moving skateboard?

• Potential
• Kinetic

What kind of energy is in a rock at the edge of a cliff?

• Potential
• Kinetic

If W=Fd
Then how much work is done if it takes 20N to move a box 10 meters

• 0
• 2
• 20
• 200

The ability to do work is....

• work
• power
• acceleration
• energy

In which of the following is no work done

• climbing stairs
• lifting a book
• pushing a shopping car
• none of the above

What is work?

• The product of force and displacement
• Causes a change in potential energy of an object
• Does not depend on the path traveled, but only starting and ending position
• All of these are true

Kinetic energy is associated with ---.

• speed

• position

• direction

• temperature

Where is the roller coaster gaining potential energy?

• A to B

• B to C

• C to D

• The roller coaster is always losing potential energy