I need help with my hw, bad. I've been screwing off in my physics class for awhile and I can't get afterschool help because I have sports. I need to pick my grade up in this class to keep playing...so here I am. I need a good walkthrough badly, i don't know a whole lot with physics, but a decent amount and I'm begginggg someone to help guide me through this at least a little bit... I need to figure out the initial velocity (muzzle velocity) of a ball after it got shot knowing the angle, height, and distance traveled. He gave me these two formulas: "Δx=Vxt" and "Δy=Vyit+1/2ayt^2". The projectile went: 0.98m Launched horizontally: (0=0°). Why "0=" and not just 0°? Guess the 0 refers to the x axis? Launched from the height: 0.79m PLEASE HELP getting me started with this. It'll be muchhh appreciated...I have quite a bit to catch up on and this is the assignment I'm starting with.