A skier wants to reach a speed of 14 m/s at the bottom of a slope...
A skier wants to reach a speed of 14 m/s at the bottom of a
slope of length L inclined at an angle of 30° with respect
to the horizontal. If the skier starts from rest, what is the
minimum L required to reach this velocity?
28 m
20 m
14 m
10 m
5 m
Homework Answers
Using conservation of enrgy
mg L / sin 30 = 0.5 m v^2
9.8 x L/0.5 = 0.5 x 14^2
Distance, L = 5 m
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