As a concerned citizen, you encompass volunteered to serve on a committee investigating injuries to Junior High School students participating in the sports programs. At present your committee is investigating the high incidence of ankle injuries on the basketball team. You are examining the team practice, looking for activities which can outcome in big horizontal forces on the ankle. Observing the team practice jump shots provides you an idea; therefore you try a small calculation. A student of 42.1kg jumps 1.0 meters straight up and shoots the basketball of 0.80 kg at his highest point. From the trajectory of the basket-ball, you deduce that the ball left his hand at 32.5o from the horizontal at 18.9 m/s. Determine the magnitude of his horizontal velocity when he strikes the ground?