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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 96 m in height. The kinetic energy of the pebble equals twice its potential energy at a distance of _______ above sea level.

  48 m

  24 m

  72 m

  32 m

  Half-n-half Clue  
 

2.

A boy throws a ball vertically upwards from ground level. If the ball reaches a maximum height of 250 m and the gravitational acceleration is 9.8 m/s2, with what speed did the boy throw the ball?

  70 m/s

  50 m/s

  35 m/s

  10 m/s

  Half-n-half Clue  
 

3.

By definition, work is done when a _______ moves through a distance.

  mass

  pressure

  force

  Half-n-half Clue  
 

4.

When a current is supplied by a battery, _______ energy is converted to electrical energy.

  chemical

  nuclear

  mechanical

  Half-n-half Clue  
 

5.

A carton is pulled along the ground for a distance of 3 m. If the average frictional force is 65 N, then the work done is

  3 J

  585 J

  195 J

  65 J

  Half-n-half Clue  
 

6.

A mass of 10 kg is moved vertically upwards through a distance of 7 m. If the gravitational acceleration is 9.8 m s-2, then the work done against gravity is

  70 J

  98 J

  68.6 J

  686 J

  Half-n-half Clue  
 

7.

_______ is the capacity to do work.

  Force

  Pressure

  Energy

  Half-n-half Clue  
 


 
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