Physics formula sheet

# Physics formula sheet - F c = m•v^2/r F c = m•a c...

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Average speed = v = d/t Vectors Average velocity = v = d/t A y = A•sin θ Average acceleration = ∆v/t A x = A•cos θ Constant-Acceleration Linear Motion Mechanical Energy vf = vi + a•t PE Grav = PE = m•g•∆h (xf-xi) = vi•t + ½•a•t² KE Linear = KE = ½•m•v² vf ² = vi² + 2•a• (xf - xi) (xf-xi) = ½•( vi + vf) •t Momentum (xf-xi) = vf•t - ½•a•t² p = m•v = mass•velocity Projectile Motion Impulse = Change in Momentum Horizontal: xf-xi= vi•t + 0 J=F•∆t = ∆(m•v) Vertical: yf-yi = vi•t + ½•a•t² Density Center Mass ρ=m/v (kg/m^3) x cm = Σ(mx) / M total Power Force Power= W/t (watts) F net = ΣF Ext = m•a P= F•d/t = F•v F f = µ•F N a = F net /m Springs F s = k•x Centripetal Force and Acceleration PE s = ½•k•x² = Work on spring
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Unformatted text preview: F c = m•v^2/r F c = m•a c Tension a c = v^2/r T=mv^2/L T=2 π r/v Banked Circular Tracks v^2 = r•g•tan θ Work W = F•d = ∆Total Energy Circular Unbanked Tracks m•v^2/r = μ •m•g Relationship b/w conservative force and potential energy Law of Sines F x = -dU/dx a / sin A = b / sin B = c / sin C Law of Cosines Collisions a^2 = b^2 + c^2 - 2•b•c•cosA Elastic-both momentum and KE are conserved v 1f = (m 1-m 2 /m 1 +m 2 )v 1i + (2m 2 /m 1 +m 2 )v 2i Rocket Propulsion v 2f = (2 m1 /m 1 +m 2 )v 1f + (m 2-m 1 /m 1 +m 2 )v 2i v f-v i = v e •ln(m i /m f ) Inelastic-only momentum conserved Perfectly Inelastic-stick together Thrust M•dv/dt = v e •dM/dt...
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