Hi, i'm a 1st year undergrad but I left school 7 years ago! Really struggling with the physics of my course. I have some coursework to hand in for Monday but I'm a little bit stuck. I have gone over my notes and have been browsing the internet for the past hour but I don't know what to do. The question comes in four parts. The latter parts are very simple to do using equations I have found on wikipedia, but Question A specifically asks "Determine the trajectory equation of the ball after being hit (give all the details from where the equation comes from)" This is an 8 mark question so it seems to be quite in depth. More background to the original problem; A tennis player1 located on the line at the back of the court attempts to “lobe” his competitor. The tennis player2 stands 2 meters behind the net facing player1 who hits the ball in 0 (origin), 9 meters away from the net and at a height of h=0.5m above the ground. The tennis ball travels with a speed Vo=12 m/s, with the velocity vector at an angle = 60o with the ground. g = 9.81 m/s2. As I said, the rest of the coursework(questions B, C, D) are relatively simple and just asks you to solve some problems, which I can do using the equations I have found online. However part A is really bothering me. I'm not sure how to go about constructing an equation and how to give details of how I arrived at it. Any help would be much appreciated.