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Question

When two bodies collide elastically, then

A
Kinetic energy of the system alone is conserved
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B
Only momentum is conserved
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C
Both energy and momentum are conseved
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D
Neither energy nor momentum is conserved
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Solution

The correct option is C Both energy and momentum are conseved
In collisions in absence of any external force the momentum is conserved.
As the collision is elastic so there will not be any deformation in the shapes of the bodies so there will not be any
loss in energy so the energy will remain constant.

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