Time to Reach Speed on Inclined Plane · CAP 1999 #A11
Physics · mechanics
Problem
Suppose that the "Man Who Skied Down Everest" went straight down an incline of 40° to the horizontal and subject to a coefficient of kinetic friction of 0.10. Starting from rest, how long did it take him to reach a speed of 50 km/hr (Ignore air resistance)?
(a) 2.5 s
(b) 9.0 s
(c) 1.5×102 s
(d) 2.0 s