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# lectureslides04 - Kinematic Equations Describe Motion of an...

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Kinematic Equations Describe Motion of an Object-ball, rocket, person… • Used in situations with uniform acceleration a =+ o vv α t Equation #1 (velocity) at t 0 average v+ v v = v = 2 0 v x v = = 2 t 0 v = 2 x t    2 00 0 v + 1 = v 22 at tta t Kinematic Equations—1-2 Constant Acceleration Eq. 1 = + o vv a t ∆= + 2 1 2 o xv t a t or 0 v - v t= a Eq. 2 = +∆ 2 o a x Eq. 3 Putting t from Eq. 1 into Eq. 2 we get Eq.3 - and 3 Note Eq. 3 is not independent of Eq. 1 and Eq. 2 Problem-Solving Hints • Read the problem • Draw a diagram – Choose a coordinate system, label initial and final points, indicate a positive direction for velocities and accelerations • Label all quantities, be sure all the units are consistent – Convert if necessary • Choose the appropriate kinematic equation • Solve for the unknowns – You may have to solve two equations for two unknowns • Check your results – Estimate and compare – Check units Free Fall • All objects moving under the influence of

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## This note was uploaded on 12/02/2009 for the course PHY 2053 taught by Professor Buchler during the Spring '06 term at University of Florida.

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lectureslides04 - Kinematic Equations Describe Motion of an...

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