1.The velocities of three particles of masses 20 g20\,\text{g}20g, 30 g30\,\text{g}30g and 50 g50\,\text{g}50g are 10i^10\hat{i}10i^, 10j^10\hat{j}10j^ and 10k^10\hat{k}10k^ respectively. The velocity of the centre of mass of the three particles isa.2i^+3j^+5k^2\hat{i} + 3\hat{j} + 5\hat{k}2i^+3j^+5k^b.10(i^+j^+k^)10(\hat{i}+\hat{j}+\hat{k})10(i^+j^+k^)c.20i^+30j^+5k^20\hat{i} + 30\hat{j} + 5\hat{k}20i^+30j^+5k^d.2i^+30j^+50k^2\hat{i} + 30\hat{j} + 50\hat{k}2i^+30j^+50k^Login to continueOnly logged in users canattempt or see the solution.
