I found the position function in the x direction and set it equal to R/2. This gave me that the time, t, such that the position of x is R/2 is t=v0
I can use trig identities to simplify this to t=v0
I can find the position function of y: Sy
, but I'm not sure what to plug in.
I'm also very confused as to how I'm supposed to express the answer in terms of H and R, as the question specifically asks.