Work, Energy, and Power

You do 90 joules of work in 30 seconds. How much power have you generated?

• 30 watts

• 3 watts

• 120 watts

• 270 watts

At which point does the ball has the greatest gravitational potential energy (GPE)?

• A

• G

• D

• C

• G

Tags

NGSS.MS-PS3-2

• Potential Energy
  

• Kinetic Energy

• Mechanical Energy

• Work

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-4

NGSS.MS-PS3-5

• Potential Energy
  

• Kinetic Energy

• Mechanical Energy

• Work

• Potential Energy
  

• Kinetic Energy

• Mechanical Energy

• Work

Tags

NGSS.MS-PS3-2

Which situation is work not done?

• lifting a 20 pound box off the floor

• holding a 20 pound box above the floor

• sliding a 20 pound box across the floor

• sliding a 20 pound box up an inclined plane

A battery converts what type of energy to another?

• sound to kinetic

• light to heat

• mechanical to electrical

• chemical to electrical

Energy that is stored in bonds between atoms is:

• Mechanical energy

• Chemical energy

• Kinetic energy

• Nuclear energy

The SI Unit for Energy is

• Joule

• Newton

• Calorie

• Watt

In which of these cases is work being done? 

• A student sleeps

• A student pushes a locked door that does not move

• a student carries his chair into another room

• A student sits on the carpet