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Can anyone help me with this problem

  1. Feb 24, 2008 #1
    A train slows down as it rounds a sharp horizontal turn, slowing from 84.2 km/h to 50.7 km/h in the 15 s that it takes to round the bend. The radius of the curve is 120 m. Compute the acceleration at the moment the train speed reaches 50.7 km/h. Assume that it continues to slow down at this time at the same rate.

    What is the magnitude in m/s2?

    What is the direction in __ ° backward (behind the radial line pointing inward)

    The formulas that I have is:

    Vf= Vi + AT

    Rf= Ri + Vi*t + (1/2)A*T^2
  2. jcsd
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