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Q.

Two particles of equal mass m are moving with velocities  vi^ and viˆ+jˆ2 respectively. If the particles collide completely inelastically, then the energy lost in the process is mv2n  ,then the value of ‘ n ’ is _____

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answer is 8.

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Detailed Solution

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 Conserving momentum mvi^+mv2i^+v2j^=2mv1i^+v2j^

On solving  V1=3v4 and V2=v4Change in K.E

12mv2+12mv222-12(2m)9v216+v216

=3mv24-5mv28=mv28

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