A ball is thrown with initial speed vo up an inclined plane. The plane is inclined at an angle(fi) above the horizontal, and the ball's initial vecity is at an angle (theta) above the plane. Choose the axes with x measured up the slope, y normal to the slope and z across it. Write down Newton's second law using these axes and find the ball's position as a function of time. Show that the ball lands a distance R=2vo^2(sin(theta)cos(theta+fi))/gcos^2(fi) from its launch point. Show that for given vo adn (fi), the maximum possible range up the inclined plane is Rmax=vo^2/g(1+sin(fi)) [Don't know if I'm spelling fi right, I mean this symbol : [tex]\phi[/tex] How do I approach this? I think the question is written poorly, they mean that the ball is thrown in the air and it lands ON the plane. Without knowing the velocity how do I find the parabolic motion the ball will make?