Energy and Power

Calculate the potential energy of a roller coaster at the top of a 72 m hill that has a mass of 112 kg.

• 79,027 J
• 790,720 J
• 7,020 J
• 790,700 J

At what position does the pendulum have the greatest gravitational potential energy?

• Position D
• Position C
• Position B

At what position does the pendulum have the greatest kinetic energy?

• Position D
• Position C
• Position B

Which character has the greatest gravitational potential energy?

• Character A
• Character B
• Character C
• Character D

Which skier has the greatest kinetic energy?

• Skier A
• Skier B
• Skier C
• Skier D

Barry Bonds swings a bat which has a mass of 1.5 kg at a velocity of 55 m/s. How many joules of kinetic energy could he give to a baseball?

• 2269 Joules
• 83 Joules
• 41 Joules
• 4 Joules

What is potential energy?

• The energy an object has due to its position or condition.

• The energy an object has due to its motion.

• The energy an object has due to its chemical composition.

• The energy as object has due to its atomic structure.

Which position shows the spring with least amount of energy elastic?

• A

• B

• C

• D

What is the spring constant for the system shown above?

• 0.1 N

• 10 N

• 200 N/m

• 50 N/m

A spring has a spring constant of 330 N/m.  How far is the spring compressed if 150 N of force are used?

• 2.2 m
• 0.0014 m
• 5.0 m
• 0.45 m