rotational-motion

Question: Two objects of masses 200 gm and 500gm possess velocities $10\hat{i}$ m/s and $3\hat{i}+5\hat{j}$ m/s respectively. The velocity of their centre of mass in m/s is

1) $5\hat{i}-25\hat{j}$

2) $\frac{5}{7}\hat{i}-25\hat{j}$

3) $5\hat{i}+\frac{25}{7}\hat{j}$

4) $25\hat{i}-\frac{5}{7}\hat{j}$

Solution:

Explanation: No Explanation

centre of mass

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