Recent content by James_22

Homework Statement Homework Equations y = y0 + volt + 1/2gt² The Attempt at a Solution We have to know when yball = y rock for the ball : t = t-1 because it's throwed 1 sec later the rock. we have to fine when yball = yrock : 12.t - 0.5*9.8*t² = 18*(t-1) - 0.5*9.81*(t-1)²..I find the...

Hello everyone, My name's Djamel, I'm from belgium but at the moment I live in UK to improve my english level. It's been a long time I finish my study ( a bachelor in industrial chemistry). I have in my project to return at university to make study. I'm preparing my self, I bought many books...