A 70kg skier is sliding down a 20-degree slope. There are 15N of drag acting on the skier and there is a .09 coefficient of dynamic friction between the skis and the surface. Calculate (1) the
friction between the skis and the surface and (2) the skier's acceleration down the slope. (8
points)

Ablue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.5 m/s 2 . a green car arrives at the position of the stop-light 6.5 s after the light had turned green. if t = 0 when the light turns green, at what time does the green car catch the blue car if the green car maintains the slowest constant speed necessary to catch up to the blue car? answer in units of s.