Fx = F.Cosθ
Fy = F.Sinθ
θ = Tan-1(Fy/Fx)
Fr = √ ΣFx2 + ΣFy2
V = Δx / Δt
V = x / t
Δx = xf - xo
Δt = tf - to
a = (V - Vo) / t
a = ΔV / Δt
x = xo + Vot + at2 / 2
Vf2 = Vo2 + 2aΔx
x = xo + (Vo + Vf)/2 . t
F = ma
w = mg
N = w (when there's no friction)
F = kq1q2 / r2
K = 9x109
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