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Write a suitable reason for heating up o...

Write a suitable reason for heating up of a metal when hit by a fast moving hammer.

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A fast moving hammer has more kinetic energy. When it strikes a metal, a part of kinetc energy changes into heat energy and the metal heats up.
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KUMAR PRAKASHAN-WORK AND ENERGY -QUESTION & ANSWER (ANSWER THE FOLLOWING QUESTIONS IN SHORT :)
  1. Name different types of energy. Give the unit of energy.

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  2. A freely falling object eventually stops on reaching the ground. What ...

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  3. Write a suitable reason for heating up of a metal when hit by a fast m...

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  4. The figure show a simple pendulum consisting a bob of mass 100 g. Init...

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  5. Certain force acting on a 20 kg mass changes its velocity from 5ms^(-1...

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  6. An object of mass 16 kg has 3200 J of kinetic energy. What will be its...

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  7. Find the momentum of a body of mass 100 g having kinetic energy 500 J.

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  8. An object of mass, m is moving with a constant velocity v. How much wo...

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  9. Calculate the work required to be done to stop a car of 1500 kg moving...

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  10. Can kinetic energy be negative? Why?

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  11. Give any four illustrations of the kinetic energy.

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  12. An object of mass 40kg is raised to a height of 5 m above the ground. ...

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  13. What are the various energy trans-formations that occur when you are ...

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  14. Does the transfer of energy take place when you push a huge rock with ...

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  15. The potential energy of a freely falling object decreases progressivel...

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  16. A battery lights a bulb. Describe the energy changes involved in the p...

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  17. A person holds a bundle of hay over his head for 30 minutes and gets t...

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  18. An electric heater is rated 1500 W. How much energy does it use in 10 ...

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  19. In each of the following a force F is acting on an object of mass m. T...

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  20. Soni says that the acceleration in an object could be zero even when s...

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