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P: 79
Thanks for the insight sophiecentaur and WannabeNewton.

FYI, the only questions left are:

 Also, does anyone know how to derive this equation below? $$x=\frac { \pm \sqrt { { { v }_{ max } }^{ 2 }+{ v }^{ 2 } } }{ ω }$$
and

 $$θ(t)={ θ }_{ max }cos(ωt+ϕ)$$ Does θmax need to be in radians or degrees? It doesn't matter, does it? Will it matter if I take the derivative? $$w(t)={ -θ }_{ max }ωsin(ωt+ϕ)$$ How can angular speed be a function of itself?