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. In a construction site, a crane lifts 1000 kg of concrete mix to roof top at a height of 20 meters in 50 seconds. If the value of gravity 'g' due to earth is 10 m/s2, the power of elevator will be KW.
2. A body is moving with velocity 4 m/s , possesses 56 Joules of Kinetic Energy. The momentum of body will be equal to kgm/s.
3. A fruit hanging from the tree possesses potential energy.
4. A vector quantity has both magnitude as well as .
5. In Force vs Displacement graph, the area under the curve represents .
6. of an agent is the rate of consumption of energy.
7. Our planet Earth receives or transfers most of its energy in the form of energy.
8. Two objects A and B are moving with same momentum. Mass of object 'B' is greater then mass of object 'A'. Object will have higher kinetic energy.
9. Work is measured as a product of and .
10. The work done on a body moving in a circular path is .