i'm having a lot of trouble with these: 1. A golf ball with an initial angle of 36° lands exactly 210 m down the range on a level course. (a) Neglecting air friction, what initial speed would achieve this result? (b) Using the speed determined in item (a), find the maximum height reached by the ball. 2. A science student riding on a flatcar of a train moving at a constant speed of 5.00 m/s throws a ball toward the caboose along a path that the student judges as making an initial angle of 65.0° with the horizontal. The teacher, who is standing on the ground nearby, observes the ball rising vertically. How high does the ball rise? if anyone knows how to do these, help would be amazing. thanks!