Question

2.4.21. [Level 2] A car is traveling along a horizontal race track. From A to B the track is straight, and from B to D it is in the form of a circular arc. The car is accelerating from A to C with a constant tangential acceleration of 5 ft/s$^2$. Its velocity at A is 80 ft/s. The distance from A to B is 300 ft and from B to C the distance is 300 ft as well. The magnitude of the car's total acceleration (accounting for both normal and tangential components) is 5 ft/s$^2$ at A and 14.6 ft/s$^2$ at C. What is the track's radius of curvature at C?

          2.4.21. [Level 2] A car is traveling along a horizontal
race track. From A to B the track is straight, and from B to D
it is in the form of a circular arc. The car is accelerating from
A to C with a constant tangential acceleration of 5 ft/s$^2$.
Its velocity at A is 80 ft/s. The distance from A to B is
300 ft and from B to C the distance is 300 ft as well. The
magnitude of the car's total acceleration (accounting for
both normal and tangential components) is 5 ft/s$^2$ at A and
14.6 ft/s$^2$ at C. What is the track's radius of curvature at C?

2.4.21. [Level 2] A car is traveling along a horizontal
race track. From A to B the track is straight, and from B to D
it is in the form of a circular arc. The car is accelerating from
A to C with a constant tangential acceleration of 5 ft/s^2.
Its velocity at A is 80 ft/s. The distance from A to B is
300 ft and from B to C the distance is 300 ft as well. The
magnitude of the car's total acceleration (accounting for
both normal and tangential components) is 5 ft/s^2 at A and
14.6 ft/s^2 at C. What is the track's radius of curvature at C?

Added by Jesse S.

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