Arace car accelerates uniformly from a speed of 38.0 m/s to a speed of 61.5 m/s in 5.00s while traveling clockwise around a circular track of radius 3.80 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/s2 (b) the angular speed rad/s (c) the magnitude of the tangential acceleration m/s2 (d) the magnitude of the total acceleration m/s2 exercise getting started i i'm stuck! hints: use the values from practice it to you work this exercise. suppose the race car now slows down uniformly from 61.5 m/s to 28.0 m/s in 4.20 s to avoid an accident, while still traveling a circular path 3.80 x 10 m in radius. (a) find the magnitude of the centripetal acceleration when the speed is 40.0 m/s. m/s2 (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/s2 (d) find the magnitude of the total acceleration when the speed is 40.0 m/s. m/s2