equation_sheet_3 - Equation Sheet Exam 3 VECTORS Ax = Acos...

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Equation Sheet, Exam 3 VECTORS: A x = Acos ( θ ), A y = Asin ( θ ), and A = ( A 2 x + A 2 y ) 1 / 2 , and tan ( θ ) = A y A x . KINEMATICS: x f = x i + v xi t + 1 2 a x t 2 , v xf = v xi + a x t , v 2 xf = v 2 xi + 2 a x ( x f - x i ), x f = x i + 1 2 ( v xi + v xf ) t , NEWTON’S LAWS: F = m a , F 12 = - F 21 , F = d p dt FRICTION: f k = μ k F N f s μ s F N WORK and ENERGY: W = F · d = Fdcos ( θ ) = R F · d l W s = U s = 1 2 kx 2 s K = 1 2 mv 2 E i + W = E f U g = mgh = - Gm 1 m 2 r 2 MOMENTUM and IMPULSE: p = m v Δ p = J = R Fdt p i + J = p
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