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2 Dec 2008 07:43:38 IST

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if momentum dubbled what happne to kinetic energy(ke)?

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if momentum dubbled what happne to kinetic energy(ke)?

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waterdemon

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Joined: 11 Jun 2007

Posts: 1048

2 Dec 2008 08:30:02 IST

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Momentum = MV

Now momentum doubled means that "Velocity is doubled"

keeping into account that "mass remains constant"

Hence new V₀ = 2V

K.E = (1/2)M(V₀)²

K.E (new) = (1/2)M(2V)² = 4 (1/2)MV² = 4 (k.e)

Hence if momentum is doubled then KE becomes 4 times initial KE.

Hope it helps.

Rizwan M

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Joined: 13 Nov 2008

Posts: 89

2 Dec 2008 11:07:34 IST

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Dude just use the damn equation

P=(2mE)^1/2;

P momentum ,E kinetic energy,m mass;

yogesh

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2 Dec 2008 12:29:11 IST

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K.E. will become 4 times
as
K.E.=spuare of momentum/2*mass

Abhishek Das

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Joined: 21 Jul 2008

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3 Dec 2008 22:01:30 IST

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such idiocy!! KE becomes 4 times the original KE!!

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