Trebuchet help!!! 1. Hi, Im writing a report for a trebuchet project, and trying to find the final velocity of the tennis ball, my teacher told us to just use this :F=m(v^2/r) for initial velocity. so I am really confused right now. I don't know how to find final velocity. Also, which equation do I use for acceleration? A=change in v/ total time; or v^2/t ? /I will just post one set of data.: Range: 7.3m; time :.98s; initial velocity: 5.981m/s. Please Help..Its Due Tomorrow..AND Im STUCK on this..=[.... THANK U !