1.

Two bodies having same mass 40 kg are moving in opposite directions, one with a velocity of 10\[m/s\] and the other with \[7m/s.\] If they collide and move as one body, the velocity of the combination is                           [Pb. PMT 2000]

A.          \[10\,m/s\]
B.                       \[7m/s\]
C.          \[3\,m/s\]                       
D.          \[1.5\,m/s\]
Answer» E.


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