Work, Energy and Momentum Notes 4 Collisions in 2-D When dealing with collisions in 2-dimensions it is important to remember that momentum is a vector with magnitude and direction. When finding the total momentum we have to do: Collisions at 90°: We then add A 750 kg Peugeot travelling at 21 m/s West collides with a 680 kg Fiat travelling at 18 m/s South. If the two cars become entwined what is their total final velocity? Vz=18k F Pf=√√Pi²+ P₂² TMB=TMA P₁+ Pz = 1 = P V₁ = 21 m/s P P2 P₁ =(750)(21) •P2 = (680)(18) P₁ = 15750ky M15 Tan@= 12240 1570 P2=12240 kg/s == 0 = 38° Remember that it is momentum that is conserved, so we need to add the momentum V 19947 kgm/s = Pf m = 19947/1430 13.9 M/S VF = 14M/s at 38° Saf NOT velocity

Work, Energy and Momentum Notes 4 Collisions in 2-D When dealing with collisions in 2-dimensions it is important to remember that momentum is a vector with magnitude and direction. When finding the total momentum we have to do: Collisions at 90°: We then add A 750 kg Peugeot travelling at 21 m/s West collides with a 680 kg Fiat travelling at 18 m/s South. If the two cars become entwined what is their total final velocity? Vz=18k F Pf=√√Pi²+ P₂² TMB=TMA P₁+ Pz = 1 = P V₁ = 21 m/s P P2 P₁ =(750)(21) •P2 = (680)(18) P₁ = 15750ky M15 Tan@= 12240 1570 P2=12240 kg/s == 0 = 38° Remember that it is momentum that is conserved, so we need to add the momentum V 19947 kgm/s = Pf m = 19947/1430 13.9 M/S VF = 14M/s at 38° Saf NOT velocity

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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