1.

Two bodies of 6 kg and 4 kg masses have their velocity 5j + 2j - 8k and 10i + 2j + 5k respectively. Then the velocity of their centre of mass is :–(a) 5i + 2j + 8k(b) 7i+2j-8k(c) 7i-2j+8k(d) 5i-2j+8k

Answer»

Correct option (c) 7i-2j+8k



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