This is the problem: I have a marble launcher that is 1.17 m tall and it needs to hit a target that is 3.645 m away. What should the angle of the launcher be set to in order to hit the target? *Marble is launched at a height of 1.17 m. What I don't understand: How can I solve this without the velocity? Am I suppose to find the velocity? And how do I find it? After I do find the velocity, how am do I find time? Do I plug the info into this equation: d=vit + 0.5at2 to find the time? Then I am completely lost because I don't know what to do to find the angle. Please I need help. It is 12:30 AM and I have a graded lab on this tomorrow.