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Two bodies of 6 kg and 4 kg masses have their velocity $5 \hat i+ 2 \hat j +10 \hat k$ and $10 \hat i - 2 \hat j -8 \hat k$ respectively. Then the velocity of their center of mass is

\[\begin {array} {1 1} (a)\;5 \hat i+ 2 \hat j-8 \hat k & \quad (b)\;7 \hat i+ 2 \hat j-8 \hat k \\ (c)\;7 \hat i - 2 \hat j + 8 \hat k & \quad (d)\;5 \hat i - 2 \hat j +8 \hat k \end {array}\]

1 Answer

$(c)\;7 \hat i - 2 \hat j + 8 \hat k$
answered Nov 7, 2013 by pady_1
 

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