19. In the winter sport of bobsledding, athletes push their sled along a horizontal ice surface and then hop on the sled as it starts to careen down the steeply sloped track. In one event, the sled reaches a top speed of 8.0 m/s before starting down the initial part of the track, which is sloped downward at an angle of 10.0°. What is the sled's speed after it has traveled the first 150 m?