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A spring gun is shot horizontally from a desk. The projectile leaves the gun at a...

A spring gun is shot horizontally from a desk. The projectile leaves the gun at a height of 1.00m above the floor and has a range of 4.00m. What will be the range of this gun if it is shot horizontally from a desk with the projectile leaving at a height of 2.00m above the floor?
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