Potential and Kinetic Energy

Kinetic energy can be calculated using the formula   KE = 1/2mv².  What is the kinetic energy of a bicycle that has a mass of 20 kg and is traveling at a velocity of 10 m/sec?  

• 10 J
• 100 J
• 1000 J
• 10,000 J

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Energy CAN BE __________.

• changed in form
• destroyed
• eliminated
• created

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If a man is pulling a wagon up a hill, describe what is occurring in terms of energy. 

• Decreasing Potential energy, Increasing Kinetic energy
• Increasing Potential energy, Decreasing Kinetic energy
• Both potential and kinetic are increasing
• Both potential and kinetic are decreasing

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A man stops his car on top of a hill.  Describe this scenario in terms of energy.

• High Potential Energy
• High Kinetic Energy
• It is impossible to tell
• No energy left

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An object is dropped on the floor, and makes a loud bang sound. What kind of energy IS NOT one that the object possesses now?

• thermal
• sound
• potential

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What is the formula for kinetic energy? Use your "Sled Wars" packet to help you.

• KE = mgh
• KE = 2mv²
• KE = 1/2mv²
• KE = mv²

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What is the formula for potential energy?  Use your "Sled Wars" packet to help you.

• PE = mgh
• PE = 2mv²
• PE = 1/2mv²
• PE = mv²

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What law states that energy cannot be created or destroyed but can only be changed from one form to another?  Use your "Sled Wars" packet and your notebook pages 29-30 to help you.

• Law of Conservation of Energy
• Law of Conservation of Matter
• Law ofGravity
• Law of Proportions

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In all of the energy transformations shown
above, the total amount of energy __________.

• disappeared when it transformed into another type
  of energy.
• decreased when it transformed into another type of
  energy.
• remained the same when it transformed into
  another type of energy.
• adds up to zero energy

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Many people ride a bicyle for fun or exercise.  Some people ride a bike to work because it helps reduce the use of fossil fuels and benefits the environment.
Which of these is NOT an example of a bicycle using mechanical energy?

• The pedals, gears and chain help turn the wheels.
• The wheels turn when the bicycle moves.
• The front wheel guides the bicycle as it moves.
• The reflector allows the bicycle to be seen at night.

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