Q.

If the kinetic energy of a body becomes four times of its initial value, then new momentum will

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a

Becomes twice its initial value

b

Become three times its initial value

c

Become four times its initial value

d

Remains constant

answer is A.

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Detailed Solution

P=2mE    ∴P∝E  i.e. if kinetic energy becomes four time then new momentum will become twice.
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