Mechanical Energy: Chapter Review

Fill in the Blank 2. When there is friction between surfaces, energy is transferred out of a system as ______________ energy.

Fill in the blank 3. The potential energy of an object depends on its ____________ and height.

Fill in the blank 4. The ________________ states that energy can be neither created nor destroyed, but can be transformed.

Fill in the Blank 5. When you move your hand or foot, your body has converted potential energy into ________.

Answer in complete sentences. 6. Name two ways you could decrease the potential energy of a bucket full of water sitting on a bench.

7. A rubber ball is dropped and bounces back up. The ball has __________.

• zero potential energy at A
• zero kinetic energy at C
• both kinetic and potential energy at A
• both kinetic and potential energy at C

8. A rubber ball is dropped and bounces back up. The ball's potential energy _______.

• is greater at C than at A
• is the same as its kinetic energy at A
• is zero at B
• is at its maximum at A

Fill in the Blank 9. When coasting while roller skating, you eventually stop due to _______________.

10. In which diagram does the ball have the greatest potential energy?

• A
• B
• C
• D

Fill in the Blank 11. A ball has 100 J of potential energy when it is on a shelf. The kinetic energy of the ball the instant it hits the floor is _______J.