A semi-trailer is coasting downhill along a mountain highway when its brakes fail. The driver pulls onto a runaway truck ramp that is inclined at an angle of 13.0° above the horizontal. The semi-trailer coasts to a stop after traveling 190 m along the ramp. What was the truck's initial speed? Neglect air resistance and friction.
2 answers
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V^2 = Vo^2 + 2g.h
Vo^2 = V^2-2g.h
Vo^2 = 0-(-19.8)*190sin13 = 837.7
Vo = 28.9 m/s.
Vo^2 = V^2-2g.h
Vo^2 = 0-(-19.8)*190sin13 = 837.7
Vo = 28.9 m/s.
3 answers