problem05_97

University Physics with Modern Physics with Mastering Physics (11th Edition)

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5.97: a) The static friction force between the tires and the road must provide the centripetal acceleration for motion in the circle. r v m mg s 2 = μ m , g , and r are constant so , 2 2 1 1 s s v v μ μ = where 1 refers to dry road and 2 to wet road. s m 19 2 ) s m 27 ( so , 2 1 s 2 1 2 s = = = v μ μ b) Calculate the time it takes you to reach the curve s 7 . 34 gives 2 ? m, 800 s, m 19 , s m 27 0 0 0 0 = + = - =
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Unformatted text preview: v v x x t x x v v x x x x During this time the other car will travel m. 1250 (34.7s) s) m 36 ( = = =-t v x x x The other car will be 50 m behind you as you enter the curve, and will be traveling at nearly twice your speed, so it is likely it will skid into you....
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