For the angle I take γ=α-β
From that I get that X velocity = cosγ*F and Y velocity = sinγ*F
Now let's say that α=0 and β=-90. It's obvious that both X and Y velocities are equal to 0. But from the equations above I get that X velocity = 0 while Y velocity = F which is wrong.
[PLAIN]http://img842.imageshack.us/img842/336/angleqj.png
Lets say that the body has force F in the direction B(β).
What is the formula that would let me calculate X velocity and Y velocity of the body?
The formula should include all three factors, A(α), B(β), and F (force of the body)...