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Is energy a scalar or a vector quantity?...

Is energy a scalar or a vector quantity? Why?

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MODERN PUBLICATION-WORK AND ENERGY-EXERCISE
  1. A boy sitting in a moving car possesses kinetic energy.

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  2. If momentum of a body is doubled, the kinetic energy becomes times.

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  3. Is energy a scalar or a vector quantity? Why?

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  4. What are the various forms of energy? Give some examples of each.

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  5. Define Kinetic energy. Give one example.

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  6. A boy of mass 18 kg is running with a speed of 12 km/h. Find the kinet...

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  7. Given that the kinetic energy of an object is 100 J. If the mass of ob...

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  8. A stationary football is kicked by a player such that it attains a spe...

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  9. Find the work done in in reasing the speed of car from 18 kmh^-1 to 36...

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  10. What is the force required to lift a book of mass m? This force is req...

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  11. What happens to the potential energy if the height of a body is double...

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  12. Give two example of bodies possessing gravitational P.E.

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  13. Give two example of bodies possessing elastic P.E.

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  14. Define potential energy. Derive an expression for it. On what factors ...

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  15. A body of mass 6 kg is kept at a height of 5 m from the surface of ear...

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  16. The body of mass 6 kg is taken from a height of 5 m to a height of 10 ...

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  17. An object of mass 12 kg is at a certain height above the ground. If th...

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  18. A boy of mass 40 kg climbs vertically upwards on a coconut tree to a h...

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  19. A boy of mass 40 kg climbs vertically upwards on a coconut tree to a h...

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  20. In a solar cell panel, energy is converted into energy.

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