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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.

A pebble is dropped from the top of a cliff 72 m in height. The kinetic energy of the pebble equals twice its potential energy at a distance of _______ above sea level.

  54 m

  18 m

  24 m

  36 m

  Half-n-half Clue
 

2.

A mass of 9 kg is raised through a vertical distance of 20 m. If the gravitational acceleration is 9.8 m s-2, then the potential energy gained by the mass is

  88.2 J

  196 J

  1764 J

  180 J

  Half-n-half Clue
 

3.

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

  Law of Conservation of Matter

  Law of Conservation of Electric Charges

  Law of Conservation of Energy

  Half-n-half Clue
 

4.

The energy possessed by a body due to its position or configuration is called _______ energy.

  potential

  thermal

  sound

  kinetic

  Half-n-half Clue
 

5.

A carton is pulled along the ground for a distance of 7 m. If the average frictional force is 97 N, then the work done is

  679 J

  7 J

  97 J

  4753 J

  Half-n-half Clue
 

6.

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

  True

  False

 

7.

A mass of 50 kg is moved vertically upwards through a distance of 8 m. If the gravitational acceleration is 9.8 m s-2, then the work done against gravity is

  78.4 J

  400 J

  490 J

  3920 J

  Half-n-half Clue
 


 
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