A train slows down at a constant rate as it
rounds a sharp circular horizontal turn. Its
initial speed is not known. It takes 18.1 s to
slow down from 80 km/h to 33 km/h. The
radius of the curve is 163 m.
As the train goes around the turn, what is
the magnitude of the tangential component of
the acceleration?
Answer in units of m/s2

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(13.06m/s)/18.1s = .721 ms^-2

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