A student wants to measure the muzzle velocity of a pellet shot from his gun. He mounts the barrel of the gun horizontally. He places a target board 5.0m in front of the gun. He then carefully marks the target with a spot where the pellet would strike if there were no gravity to change the pellet's path. He fires the gun. The pellet strikes the target exactly 0.25m below the marked spot. Calculate the muzzle (initial) velocity of the pellet as it leaves the gun. (Enter your answer)