Kinetic and Potential Energy

Mr. Anderson's AP Physics video covers kinetic and potential energy, using a wrecking ball and a skateboarder in a PHET simulation to illustrate energy conversion and conservation. The video explains how energy is stored and converted in closed systems, and how to calculate potential and kinetic energy. It also demonstrates solving energy problems, emphasizing the conservation of energy principle.

What type of energy is associated with the motion of an object?

• Potential energy

• Kinetic energy

• Thermal energy

• Chemical energy

In a closed system, what happens to the total internal energy?

• It remains constant

• It fluctuates randomly

• It decreases

• It increases

What happens to the skateboarder's energy when friction is introduced in the PHET simulation?

• It is converted into thermal energy

• It remains as kinetic energy

• It disappears completely

• It is converted into potential energy

How much potential energy does a 75 kg skateboarder have at the top of an 8-meter ramp?

• 7,500 joules

• 3,448 joules

• 4,800 joules

• 5,900 joules

If a skateboarder has 5,900 joules of potential energy at the top of a ramp, what is their speed at the bottom assuming all energy is converted to kinetic?

• 13 meters per second

• 8 meters per second

• 10 meters per second

• 15 meters per second