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A $12\text{ kg}$ cannonball was moving horizontally at $410\text{ m/s}$ to the left when it hit Superman ($\text{mass} = 95\text{ kg}$), who was traveling horizontally in the opposite direction (to the right) at $320\text{ m/s}$. After the collision, the cannonball bounced back (opposite its original direction) at $250\text{ m/s}$.

Which of the following is the most accurate estimate of Superman's velocity just after the collision?


$240\text{ m/s}$ to the right.


$340\text{ m/s}$ to the right.


$399\text{ m/s}$ to the right.


$2600\text{ m/s}$ to the right.

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