1.

Particals of masses Ikg and 3kg are at (10i - 7j - 3k) ms^(-1) and (7i - 9j + 6k) ms^(-1) then a instantaneous velocity of their centre of masses

Answer»

`(1)/(4)(31i-15k)MS^(-1)`
`(1)/(4)(30i-32j+15k)ms^(-1)`
`(1)/(4)(25i-28j+15k) ms^(-1)`
`(1)/(4)(31i-34j+20k)ms^(-1)`

ANSWER :A


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