PRINCIPLE OF CONSERVATION OF ENERGY

Which statement describes the principles of conservation of energy?

• Energy can be destroyed

• Energy can created

• Energy can change its form

• Energy can retain its value

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What is the change of energy form when the trolley moves down the runway?

• Gravitational potential energy to kinetic energy

• Kinetic energy to gravitational potential energy

• Elastic potential energy to kinetic energy

• Kinetic energy to elastic potential energy

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The diagram shows a ball rolling down a surface. at Which position does the ball possess maximum kinetic energy and maximum potential energy?

• Max kinetic energy = P. Max potential energy=Q

• Max kinetic energy = P. Max potential energy=R

• Max kinetic energy = Q Max potential energy=P

• Max kinetic energy = R. Max potential energy=P

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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

• Energy cannot be created or destroyed.

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What is the formula for Kinetic Energy?

• KE = mass x velocity

• KE= 1/2 x mass x velocity ²

• KE = mass x gravity x height

• KE = mass x velocity / 2

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What force causes a roller coaster cart to slow down the most?

• friction

• weight

• gravity

• air resistance

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The law of energy conservation says the total energy before the change _______ the total energy after it

• is less than
• is more than
• affects
• equals

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Which 2 letters have the most kinetic energy

• W & Y
• X & Z

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What happens when the ball goes from the highest position to the lowest position

• PE and KE increases and decreases together

• Impossible to know without knowing the mass of the object

• the PE decreases while KE increases

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

• 
• 
• 
• 

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