Potential and Kinetic Energy

Potential and Kinetic Energy

P.6B: Investigate examples of kinetic and potential energy and their transformations.

Maximum Potential Energy Achieved

Notice how the doggie has reached its maximum height, and has therefore stored the maximum amount of potential energy he/she can. Ex: 300J=PE

PE converted into KE

The potential energy has begun to convert into Kinetic energy, as he picks up speed down the ramp.

Maximum Kinetic Energy

The skater is moving at his fastest speed. All the stored potential energy has been converted into kinetic energy. Ex: PE=KE = 300J

1/2 PE=1/2 KE

Here halfway up the ramp, half of the stored energy has converted into the energy of his motion, Which is approximately half .

1/2 Ke=150J, 1/2 Pe=150J.

Which is KE being transformed into

PE?

1. a ball kicked up hill

2. a skateboarder going downhill

3. starting your car

4. bending a plastic straw

Multiple Choice

Which example is a form of KE converting into PE?

• 1. a ball kicked up hill

• 2. a skateboarder going down hill

• 3. starting your car

• 4. bending a plastic straw

Which three variables affect the magnitude of potential energy?

1. mass

2. velocity

3. acceleration due to gravity

4. height

Which variable will not be included for calculating a measured potential energy quantity?

1. mass

2. velocity

3. acceleration due to gravity

4. height

Multiple Select

Which three variables affect the magnitude of potential energy?

• mass

• height

• velocity

• acceleration due to gravity

Multiple Choice

Which example is stored PE converted into Ke?

• Holding up a pen

• throwing up a tennis ball

• dropping a paint brush from a ladder

• rolling a bowling ball on the lane

Multiple Choice

Energy is never destroyed, nor is it created. Energy is always converted from one form into another. Converting Energy is also known as conserving all ______ of any situation.

• mass

• energy

• gravity

Multiple Choice

If some energy is lost in the calculations, where COULD that energy have been converted into?

• Thermal energy: (heat/friction)

• sound energy

• both

• neither

Multiple Choice

positive or negatively charged atoms are considered to have energy of what kind?

• mechanical energy

• thermal energy

• radiant energy

• electrical energy

Multiple Choice

What is another name for Potential energy?

• kinetic energy

• stored energy