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You can start by thinking about the fact that the time the bullet was in the air is the time it takes for something to drop 2 cm under gravty. In other words:
2 cm = 1/2 * g t^2, now solve for t.

Once you that, it's easy to find the velocity of the bullet - it's simply velocity = distance/time.

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Originally Posted by ebaines

You can start by thinking about the fact that the time the bullet was in the air is the time it takes for something to drop 2 cm under gravty. In other words:
2 cm = 1/2 * g t^2, now solve for t.

Once you that, it's easy to find the velocity of the bullet - it's simply velocity = distance/time.

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After thinking about it a little more I managed to find the answers. =) thanks!