Work And Energy

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
1. A dog weighing 25 kg, while chasing a cat, jumps over a fence of height 1.6 m. The potential energy of dog at the top of fence is Joules.
2. In winters, rubbing of hands together for some time, causes a sensation of warmth mainly because of heat caused by the force of .
3. A soldier makes a swing jump between two points, by holding one end of a rope, other end of which is tied to some higher point. Work done by rope in jumping of soldier from one point to another is an example of work done.
4. The commercial unit of energy consumption in households, industries and commercial establishments is .
5. A runner, while moving, is facing a wind from the opposite direction. The work done by the wind on runner will be .
6. The person will have maximum Energy, when he is standing on the roof.
7. When we stretch a rubber band, the Elastic Potential Energy of rubber band .
8. When a body slides down on an inclined surface, it has both and potential energy.
9. The total energy before and after the transformation always remains .
10. An object is displaced by 10 meters in the direction of applied force. If the applied force is 75 N. The work done by the force is Joules.