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School Physics Quiz : Work & Energy


Answer the following questions based on work & energy.

Formats Info Page Quiz Review
Multiple choice

Your Performance  

1.

A body loses 1470 J of potential energy in falling through 75 m. If the gravitational acceleration is 9.8 m s-2, then the body has a mass of

  150 kg

  2 kg

  20 kg

  735 kg

  Half-n-half Clue
 

2.

_______ is the capacity to do work.

  Pressure

  Force

  Energy

  Half-n-half Clue
 

3.

'Energy can neither be created nor destroyed' is a statement of the

  Law of Conservation of Energy

  Law of Conservation of Electric Charges

  Law of Conservation of Matter

  Half-n-half Clue
 

4.

A boy throws a ball vertically upwards from ground level. If the ball reaches a maximum height of 40 m and the gravitational acceleration is 9.8 m/s2, with what speed did the boy throw the ball?

  14 m/s

  20 m/s

  28 m/s

  4 m/s

  Half-n-half Clue
 

5.

Both work and heat are measured in Joules.

  True

  False

 

6.

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

  True

  False

 

7.

The energy losses from machines are mostly dissipated as sound energy.

  True

  False

 


 
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