The car travels up the hill with a speed of v = (0.2s) m/s - F12-32

12.7 Curvilinear Motion: Normal and Tangential Components
F12–32. The car travels up the hill with a speed of v = (0.2s) m/s, where s is in meters, measured from A. Determine the magnitude of its acceleration when it is at point s = 50 m, where r = 500 m.

All problems from Engineering Mechanics: Dynamics Fourteenth Edition in SI Units by R. C. Hibbeler.