111_Physics ProblemsTechnical Physics

111_Physics - 112*P4.70 Motion in Two Dimensions Let the river flow in the x direction(a To minimize time swim perpendicular to the banks in the y

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112 Motion in Two Dimensions *P4.70 Let the river flow in the x direction. (a) To minimize time, swim perpendicular to the banks in the y direction. You are in the water for time t in yv t y = , t == 80 15 53 3 m ms s . .. (b) The water carries you downstream by xv t x = 250 533 133 s m bg . (c) K v s K v w K v s K v w + K v s K v w K v s K v w + K v s K v w K v s K v w + To minimize downstream drift, you should swim so that your resultant velocity KK vv sw + is perpendicular to your swimming velocity K v s relative to the water. This condition is shown in the middle picture. It maximizes the angle
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This note was uploaded on 12/14/2011 for the course PHY 203 taught by Professor Staff during the Fall '11 term at Indiana State University .

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