1. The trajectory of a rock thrown from a height with an initial speed of 20.9 m/s is shown in the figure below. Evaluate the magnitude of the gravitational field at the surface of the planet. The planet has no atmosphere. https://s2.lite.msu.edu/cgi-bin/plot.png?file=muiblack_msu_1442688985_1543723_plot.data [Broken] 2. Relevant equations Tangent = Opposite/Adjacent Xmax=Vo^2/a*sin2Theta=Vo^2/a*2sinTheta*cosTheta 3. The attempt at a solution Rise = 15 Run=20 Tan(x)=15/20 x=36.869 I think. I got this number but plugging this back in is not working for me. I thought I would take this and plug it into a triangle where h=20.9 (Vo) then the y-component would be the answer. This is not working.