98_Physics ProblemsTechnical Physics

# 98_Physics ProblemsTechnical Physics - Chapter 4 P4.40 The...

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Chapter 4 99 P4.40 The bumpers are initially 100 0 100 m k m = . apart. After time t the bumper of the leading car travels 40.0 t , while the bumper of the chasing car travels 60.0 t . Since the cars are side by side at time t , we have 0100 400 600 .. . += tt , yielding t = 500 10 180 3 h s . P4.41 Total time in still water t d v == = × 2000 120 167 10 3 . . s . Total time = time upstream plus time downstream: t t up down s s = = + = 1000 120 0500 143 10 588 3 (. . ) . . Therefore, t total s × 588 202 10 33 . P4.42 v =+ = 150 30 0 153 22 k m h θ = F H G I K J tan . . 1 30 0 150 11 3 north of west P4.43 For Alan, his speed downstream is
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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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