2425_formulas - Physics 2425 - Formula List 1D Kinematics...

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Physics 2425 - Formula List ü 1D Kinematics General 1D Motion: x as a function of t v = D x D t . v = x t , a = D v D t . a = v t Constant Vel.: x H t L = x 0 + v t ï D x = v t Constant Acc.: v H t L = v 0 + a t and x H t L = x 0 + v 0 t + 1 2 a t 2 v = v 0 + a t D x = 1 2 I v 0 + v M t D x = v 0 t + 1 2 a t 2 v 2 - v 0 2 = 2 a D x Free Fall : x Ø y H y is up L and a = - g ü General Vectors A = A x x ` + A y y ` = Y A x , A y ] Mag. & Dir. angle î Components A x = A cos q and A y = A sin q . Components î A = A x 2 + A y 2 and q = tan - 1 A y A x for A x > 0 180 ° + tan - 1 A y A x for A x < 0 ü General 2D Kinematics r as a function of t v = D r D t , v = r t , a = D v D t , a = v t , Ave. Speed = Total Distance Total Time Constant Acc.: v H t L = v 0 + a t and r H t L = r 0 + v 0 t + 1 2 a t 2 ü Projectiles Horizontal: a x = 0 ï v x is const. Vertical: a y = - g v 0 x = v 0 cos q and v 0 y = v 0 sin q . R = v 0 2 g sin H 2 q L , ( R = D x when D y = 0) ü Relative Motion v = v £ + v 0 ü Newton's Laws First Law: v is const., unless net force. Second Law: F net = m a Third Law: F 12 = - F 21 Weight ! Mass: W = m g ü Friction between surfaces f s § m s N (static), f k = m k N (kinetic) ü Circular Motion Uniform Circular Motion: a c = v 2 r , Also v = 2 p r T ï a c = J 2 p T N 2 r General Circular Motion: a c = v 2 r , a t = v t ü Accelerated Frames g art = - a (artificial gravity) accelerated frame ï false force opposite acc. ü
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2425_formulas - Physics 2425 - Formula List 1D Kinematics...

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