Suppose the roller coaster in Fig. 6-38 (h1 = 39 m, h2 = 10 m, h3 = 25) pes point A with a speed of...?

Suppose the roller coaster in Fig. 6-38 (h1 = 39 m, h2 = 10 m, h3 = 25) pes point A with a speed of 1.90 m/s. If the average force of friction is equal to one sixth of its weight, with what speed will it reach point B? The distance traveled is 60.0 m.