Skeletor decides to test the law of gravitation by dropping Man-At-Arms off the top of 808 meter high Snake Mountain in Eternia and timing find how long it takes before he hits the ground. Four seconds after Skeletor lets go. She-Ra arrives at the top of the mountain. Find with what initial velocity must she dives to save Man-At-Arms just before he reaches the ground? Assume the acceleration due to gravity is 10.3 m/s2 in Eternia.
m/s