Two particles of masses $200 \ g$ and $500 \ g$ are moving with velocities $10 \ \hat{i} \ m/s$ and $3 \ \hat{i} + 5 \ \hat{j} \ m/s$ respectively. The velocity of the center of mass of the system is:

  • A
    $5 \ \hat{i} - \frac{25}{7} \ \hat{j}$
  • B
    $\frac{5}{7} \ \hat{i} - 25 \ \hat{j}$
  • C
    $5 \ \hat{i} + \frac{25}{7} \ \hat{j}$
  • D
    $25 \ \hat{i} + \frac{5}{7} \ \hat{j}$

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