Use the worked example above to help you solve this problem. A race car accelerates uniformly from a speed of 44.5 m/s to a speed of 57.5 m/s in 5.00 s while traveling clockwise around a circular track of radius 4.30 x 102 m. When the car reaches a speed of 50.0 m/s, find the following. (a) the magnitude of the centripetal acceleration m/s (b) the angular speed rad/s (c) the magnitude of the tangential acceleration m/s (d) the magnitude of the total acceleration m/s EXERCISE HINTS: GETTING STARTED | I'M STUCK! Use the values from PRACTICE IT to help you work this exercise. Suppose the race car now slows down uniformly from 57.5 m/s to 34.0 m/s in 4.10 s to avoid an accident, while still traveling a circular path 4.30 x 102 m in radius. (a) Find the magnitude of the centripetal acceleration when the speed is 40.0 m/s. m/s (b) Find the angular speed when the speed is 40.0 m/s. rad/s (c) Find the magnitude of the tangential acceleration when the speed is 40.0 m/s. m/s (d) Find the magnitude of the total acceleration when the speed is 40.0 m/s. m/s