Mechanical Energy EXTRA PROBLEMS DO NOT USE

A marble is on a table 2.4 m above the ground. What is the mass of the marble if it has a potential energy of 568 J?

• 24 kg
• 2300 kg
• 140 kg
• 0.041 kg

Find the potential energy of a ball that has a mass of 13.0 kg and is 4.8 m above the ground.

• 610 J
• 62 J
• 27 J
• 6.4 J

How does the kinetic energy of an object change if its speed doubles?

• KE quadruples
• KE is halved
• KE remains the same
• not enough information to answer

Is the change in potential energy when a box is lifted 1 meter off the ground the same on Earth and the Moon?

• yes, PE remains the same
• not enough information to answer
• no, PE would be greater the Moon
• no, PE would be greater on Earth