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The kinetic energy of a body decreases b...

The kinetic energy of a body decreases by 20%. What is the percentage decreases in its linear momentum?

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SL ARORA-Work, Energy and power-EXERCISE
  1. Two bodies of masses 1g and 16g are moving with equal kinetic energies...

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  2. If the momentum of a body is increased by 50%, then what will be the p...

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  3. The kinetic energy of a body decreases by 20%. What is the percentage ...

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  4. A running man has half the KE that a body of half his mass has. The ma...

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  5. While catching a cricket ball of mass 200g moving with a velocity of 2...

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  6. A stone of mass 0.4kg is thrown vertically up with a speed of 9.8ms^(-...

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  7. A ball is throuwn vertially up with a velcity of 20ms^(-1). At height ...

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  8. 230 joules were spent in lifing a 10 kg weight to a height of 2 m. Cal...

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  9. Calculate the work done in lifting a 300 N weight to a height of 10 m ...

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  10. A bullet of mass 10 g travels horizontally with speed of 100 ms^(-1) a...

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  11. A simple pendulum of length 1m has a wooden bob of mass 1kg. It is str...

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  12. A spring gun has a spring constant of 80Ncm^(-1). The spring is compr...

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  13. A solid of mass 2 kg moving with a velocity of 10ms^(-1) strikes an id...

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  14. A 16kg block moving on a frictionless horiozntal surface with a veloci...

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  15. A block of mass 2kg is propped from a heught of 40cm on a spring where...

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  16. A block of massm, initally at rest is dropped from a height h onto a s...

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  17. An object is attached to a vertical springs and lowered slowly to its ...

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  18. A massless platform is kept on a light elastic spring as shown in figu...

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  19. About 4xx10^(9)kg of matter is converted into energy in the sun each s...

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  20. Show that energy equivalent to atomic mass unit equals nearly 933 MeV ...

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