- #1
BarneyStinson
- 10
- 0
Homework Statement
A rock is thrown from the top of a slope that makes an angle of 30 degrees with the horizontal. At what angle to the horizontal should the rock be thrown to get a maximum range? (Hint: pick the direction of the slope as a new x-axis and the normal to the slope as the new y axis. There will be acceleration in both axes.)
Homework Equations
y=y_o+v_y_o*-.5*g*t^2
v_y=v_y_o+a_y*t
x=x_o+v_x_o+.5a*t^2
v_x=v_x_o
The Attempt at a Solution
I drew a diagram of what is happening:
I need to solve for theta.
I don't think it will be 45 degrees to the horizontal, as you start on a slant. Even if i did think it was, i don't know where to plug 45 into.
Can anyone guide me on the right path? Offer any more hints?
Thanks.