A car (mass mA) is driving at velocity V, when it smashed into an unmoving car (mass mB), looking bumpers. Both cars move together at the same velocity. The common velocity will be by A) mAV/mB B) mBV/mA C) mAV/(mA+mB) D) (mA+mB)V/mA

A car (mass mA) is driving at velocity V, when it smashed into an unmoving car (mass mB), looking bumpers. Both cars move together at the same velocity. The common velocity will be by
A) mAV/mB
B) mBV/mA
C) mAV/(mA+mB)
D) (mA+mB)V/mA
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yatangije62
From linear momentum conservation-

So, common velocity will be mAV/(mA+mB) option (C)