Honors Conservation of energy quiz

1. If a system conserves its total mechanical energy

• it must be open

• It must be closed

• It can be either open or closed

• not be moving

If a system is gaining or loosing energy

• Work must be done in the open system

• work must be done in the closed system

• It must be moving

• There must be gravity

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

Calculate the kinetic energy of a 2 kg mass moving on a 10 meter bridge with a velocity of 50m/s

• 10 j

• 200 j

• 100 j

• 50 J

• 2500 j

Tags

NGSS.HS-PS3-2

Calculate the potential energy of a 2 kg mass moving on a 10 meter bridge with a velocity of 50m/s

• 10 j

• 200 j

• 100 j

• 50 J

• 2500 j

If you tripple the velocity of an object in ; what would happen to the KE of that object

• tripple

• cut in 1/3

• increase by a factor of 9

• decrease by a factor of 1/9

Which bar graphs represent the following scenario: You gently lower a book from high shelf to the floor

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• 
• 
• 

Tags

NGSS.HS-PS2-4

NGSS.HS-PS3-1

NGSS.HS-PS3-2

Which bar graphs represent the following scenario: a car rolls down a frictionless hill to level ground without apply the gas or brakes.

• 
• 
• 
• 

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-2

Which bar graphs represent the following scenario: a car slows down by applying its breaks on a level road

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• 
• 
• 

Tags

NGSS.HS-PS2-1

Which bar graphs represent the following scenario: a car starts from rest, then accelerates up a hill

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• 
• 
• 

Tags

NGSS.HS-PS2-1

NGSS.HS-PS3-1

Calculate the spring potential energy of a spring with a spring constant of 500N/M that has been stretched .2 meters

• 10J

• 20j

• 100

• 50

• 1000 j