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School Physics Quiz : Work & Energy


Answer the following questions based on work & energy.

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Multiple choice

Your Performance  

1.

The SI unit of power is

  Volt

  Joule

  Watt

  Half-n-half Clue
 

2.

The energy acquired by a body because of its motion is called potential energy.

  True

  False

 

3.

The maximum amount of work that can be done by a 60 kW machine in 9 seconds is

  7 J

  540 J

  7 kJ

  540 kJ

  Half-n-half Clue
 

4.

A body loses 6468 J of potential energy in falling through 60 m. If the gravitational acceleration is 9.8 m s-2, then the body has a mass of

  588 kg

  11 kg

  108 kg

  660 kg

  Half-n-half Clue
 

5.

Both work and heat are measured in Joules.

  True

  False

 

6.

A mass of 50 kg is moved vertically upwards through a distance of 3 m. If the gravitational acceleration is 9.8 m s-2, then the work done against gravity is

  490 J

  1470 J

  150 J

  29.4 J

  Half-n-half Clue
 

7.

A mass of 5 kg is raised through a vertical distance of 60 m. If the gravitational acceleration is 9.8 m s-2, then the potential energy gained by the mass is

  300 J

  49 J

  2940 J

  588 J

  Half-n-half Clue
 


 
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