formulamidterm1.pdf

# formulamidterm1.pdf - Physics 302K Formula Sheet Exam Math...

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Physics 302K Formula Sheet Exam . Math: sin = opposite / hypotenuse, cos = adjacent / hypotenuse, tan = opposite / adjacent x = b ± b 2 4 ac 2 a when ax 2 + bx + c = 0 One dimensional motion (a=const) displacement: Δx = x - x 0 average speed: average speed = total distance total time average velocity: v avg = Δ x Δ t or v avg = v 0 + v 2 average acceleration: a avg = Δ v Δ t kinematic equation 1: x - x 0 = v 0 t + 1 2 at 2 kinematic equation 2: v = v 0 + at kinematic equation 3: v 2 = v 2 0 + 2a(x - x 0 ) Projectile motion (a=const) kinematic equation 1: x - x 0 = v 0 x t kinematic equation 2: y - y 0 = v 0 y t - 1 2 gt 2 kinematic equation 3: v y = v 0 y - gt kinematic equation 4: v 2 y = v 0 y 2 - 2g(y-y 0 ) Newtons Laws Force: F = ma, Weight W = mg equilibrium conditions: Σ F x =0, Σ F y =0,Σ F z =0 non-equilibrium conditions: Σ F x =ma x , Σ F y =ma y , Σ F z =ma z static friction force f s μ s F n ; kinetic friction force f k = μ k F n Work and Energy work: W = F cos θ Δx, work θ =0: W = F Δx potential energy: U = mgy = mgh; elastic potential energy stored in a spring: U s = 1 2 kx 2

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