A ball is shot from the ground into the air. At a height of 9.1 m, the velocity is observed to be v = (7.9 i + 6.9 j) m/s, with i horizontal and j upward. (a) To what maximum height does the ball rise? 11.5136 m (b) What total horizontal distance does the ball travel? m (c) What is the magnitude of the ball's velocity just before it hits the gound? m/s (d) What is the direction of the ball's velocity just before it hits the ground? ° relative to the horizontal I got A I don't really know how to start B.. could someone give me a hint?