Question

kinetic energy of particle is double,percentagechange in linear momentum is

Answer 1

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your answer..

kinetic energy is proportional to the square of velocity 

momentum is proportional to just the velocity



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Answer 2

If the momentum of an object isdoubled, but its mass does not increase (so velocity remains well below the speed of light), then itsvelocity is doubled. If the velocity isdoubled then the kinetic energyincreases by the square of 2, or four time. Hence kinetic energy of the body will be 4 times to its eirlier value.