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An accelerometer C is mounted to the side of the roller-coaster car and records a total acceleration of 3.9g as the empty car passes the
bottommost position of the track as shown. If the speed of the car at this position is 190 km/h and is decreasing at the rate of 16 km/h
every second, determine the radius of curvature p of the track at the position shown.
Answer: p= i
V
Co-
3
0.96 m
V

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