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Class 12 Tuition > Learn Class XI-XII Tuition (PUC) > What is the change in kinetic energy(ies) of body(ies)...
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What is the change in kinetic energy(ies) of body(ies) after collision of 2 moving bodies; you can take inelastic or elastic collision. 1- Remains same 2-Decreases 3-increases 4-any other possibilty Hint: momentum is conserved.

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Perfectly Elastic Collision:- Both momentum and K.E are conserved. Inelastic collision:- Momentum is conserved within the system but kinetic energy is converted to some other form of energy like heat or sound and thus within the system is not conserved.
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Tutor

kinetic energy of one body will increase and the other will be decreased
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Trainer

Decreases
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PGT-Physics

Kinetic energy decreases in an inelastic collision but remains same in an elastic collision. As no collision can be perfectly elastic and there is always some loss of energy in any form so answer to your question is 2-Decreases
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Tutor

I agree with MR Satyanarayana Rao. An inelastic collision is one in which part of the kinetic energy is changed to some other form of energy in the collision. Momentum is conserved in inelastic collisions, but one cannot track the kinetic energy through the collision since some of it is converted to...
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I agree with MR Satyanarayana Rao. An inelastic collision is one in which part of the kinetic energy is changed to some other form of energy in the collision. Momentum is conserved in inelastic collisions, but one cannot track the kinetic energy through the collision since some of it is converted to other forms of energy. read less
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Physicist in outlook and thought

In elastic collision : KE is conserved In inelastic collision : KE decrease
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IIT/BITSAT Decoded !!

-->Kinetic energy remains same for the system( which consists of all the bodies) for elastic collision. --> For inelastic collision kinectic energy for the system will decrease , as there will be loss in form of heat, vibrational & elastic energy. --->Kinetic energy of individual body will depend...
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-->Kinetic energy remains same for the system( which consists of all the bodies) for elastic collision. --> For inelastic collision kinectic energy for the system will decrease , as there will be loss in form of heat, vibrational & elastic energy. --->Kinetic energy of individual body will depend on the mass of each body. Equations involved = momentum conservation. m1u1 + m2u2 = m1v1 + m2v2 K.E initial = K.E final + losses. (heat + vib. +elastic). From above assertions 2nd option seems to be the most accurate answer. read less
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Teaching Physics for JEE MAIN and JEE ADVANCE.

in elastic collision it remains same
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The answers are different for elastic and inelastic collision. There is no use of the hint you gave.
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Physics Guru

In elastic collision, KE remains conserved but in inelastic collision, it is not.
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