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# eqs(1) - " W c Gravitational Potential Energy U g = mgy...

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Physics 204A Equation Sheet for Exam 2 Laws, Principles, Useful Relationships, and Other Information The Definition of Velocity: r v ! d r r dt The Definition of Acceleration: r a ! d r v dt The Kinematic Equations: v = v o + at x = x o + v o t + 1 2 at 2 v 2 = v o 2 + 2a(x ! x o ) x ! x o = 1 2 (v + v o )t Centripetal Acceleration: a c = v 2 r Newton's Second Law F = ma The Mass/weight Rule F g = mg Definition of Coefficient of Friction μ ! F fr F n Definition of Work W ! r F d r s " Definition of Kinetic Energy K ! 1 2 mv 2 Work-Energy Theorem W net = ! K The Definition of Power P ! dW dt Law of Conservation of Energy ! K + ! U = W nc Definition of Potential Energy ! U " #
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Unformatted text preview: " # W c Gravitational Potential Energy U g = mgy Spring Potential Energy U s = 1 2 kx 2 Dot Product r A • r B ! ABcos " = A x B x + A y B y + A z B z Cross Product r A ! r B " ABsin # ˆ n = ˆ i ˆ j ˆ k A x A y A z B x B y B z Acceleration due to gravity g = 9.80 m/s 2 Earth - mass: 5.98 x 10 24 kg radius: 6.38 x 10 6 m Moon - mass: 7.36 x 10 22 kg radius: 1.74 x 10 6 m Earth - moon distance: 3.82 x 10 8 m Sun - mass: 1.99 x 10 30 kg radius: 6.96 x 10 8 m Sun - Earth distance: 1.50 x 10 11 m...
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