Module 4 - L3- Law of conservation of energy + power

The Law of Conservation of Energy states:

• Energy can created or destroyed but not transformed 
• Energy cannot be created or destroyed, it can only transformed
• Energy can't be created, destroyed or transformed

What energy transformation are occurring in this picture?

• gravitational potential --> sound --> thermal

• chemical potential --> mechanical --> elastic potential --> gravitational

• electrical --> sound --> thermal --> radiant

• chemical potential --> radiant --> thermal

At which point would this roller coaster possess the greatest amount of potential energy?

• 1

• 2

• 3

• 4

At which point would this roller coaster possess the most kinetic energy?

• 1

• 2

• 3

• 4

The sum of potential energy and kinetic energy equals ________.

• work

• transformation

• total energy

• mechanical energy

According to the law of conservation of energy, the total amount of energy in the universe ____.

• remains constant

• changes constantly

• increases

• decreases

Which equation is correct?

• mechanical energy = kinetic energy – potential energy

• mechanical energy = potential energy – kinetic energy

• mechanical energy = kinetic energy + potential energy

• mechanical energy = kinetic energy × potential energy

The rock in the picture is pushed over the edge and it begins to fall. Which type of energy conversion is taking place?

• mechanical to heat

• sound to mechanical

• potential to kinetic

• kinetic to potential

A ball is projected into the air. Where is potential energy the greatest?

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• 
• 
• 

Which point on the roller coaster's path represents the maximum potential energy?

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• 
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