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The car has a speed of 100 km/h at A and 50 km/h at C. The path distance from A to C is 120m. The total acceleration of the car at A is 3 m/s^(2). The car has a constant tangential acceleration.

1) determine the radius of curvature of the road at A.
2) determine the total acceleration at C.
60 mC 60 m 150 m 火
engineering   Mechanical-Engineering   
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Answer #1

一,Solution : The dimensions ‘{ dhe cas are small compared Pos ticle . The velacities ase 1000 = 1389 m)sec. → ale find che constant deceleeation along dhe pa 4b 417m pale ad dhe CD γ.dv = Sqt, ds|ギjv.dv = qt( ds 2 41 r)s 2x120 condition at A : uoidh she total acceleza tion oiven and at detesmined, de can easily tampule a, ant hacefren foom 2. 2 2. an = 3-(2.41) = 3.19 ALF -241m)51 2. 8 2. 2 C218) an 18S a=at=-2.41 m/s2 +ヒ 432 ) Anscweeingioite at dhe inflection point, aの-o and O condition at c: 가e Cenclhion atTh cceletaon be comes mal accelesouhon becomes 2. = 1.286 m)52 luih unit veches en ond et in the n dhe acceleaahon may be Written and t- divection 2. alhese, the agmbude of a is a= 2. 2. | (1.286)at C-2.4 1D2 a = 2 each) 아 dhe three poat s ose shoon to acceleenton

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