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Give any four illustrations of the kinet...

Give any four illustrations of the kinetic energy.

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Illustrations of kinetic energy are as follows :
(1) A bullet fired from the rifle possess kinetic energy and pierces the target.
(2) The kinetic energy of wind is used in running windmills.
(3) Kinetic energy of flowing water is used to provide electricity through hydroelectric power stations.
(4) A coconut detached from a coconut palm falls towards the earth and hence it possesses kinetic energy.
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KUMAR PRAKASHAN-WORK AND ENERGY -QUESTION & ANSWER (ANSWER THE FOLLOWING QUESTIONS IN SHORT :)
  1. Calculate the work required to be done to stop a car of 1500 kg moving...

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  2. Can kinetic energy be negative? Why?

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  3. Give any four illustrations of the kinetic energy.

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

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

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

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

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

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

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

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

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

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  13. Find the energy in kWh consumed in 10 hour by 4 devices of power 500 W...

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  14. A certain household has consumed 250 units of energy during a month. H...

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  15. A mass of 10 kg is at a point A on a table. It is moved to a point B. ...

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  16. What is the work done by the force of gravity on a satellite moving ro...

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  17. Think of situation when an obejct gets displaced in the absence of a f...

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  18. An object thrown at a certain angle to the ground moves in a curved pa...

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  19. When is the work done by a force is positive and negative ?

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  20. How is work calculated, if a applying force to the object (i) there is...

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