Physics

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Situation: While holding his rifle at shoulder-level, a 1.8 meter tall hunter accidentally discharges it straight up into the air.

Questions:
1) If the bullet exits the barrel of the rifel at 200 meters per second squared, how many seconds does the hunter have to "step aside" to avoid being hit by the descending bullet?
2) How high did the bullet rise in the air before it started falling back down to earth?
3) If he does not move fast enough as what velocity would the descending bullet strike his shoulder?

Keeping in mind all of this is in Freefall

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