Question 1198189: A ramp is 15 feet across horizontally at the base, and rises 4 feet high. A water skier travels at a speed of 30 ft/s. How fast is she rising as she leaves the ramp?
Answer by ikleyn(52792)   (Show Source):
You can put this solution on YOUR website! .
The method of solution is to apply the mechanical energy conservation law,
but when the input data is given in feet and lbs, it generates disgust instead of enthusiasm.
In Physics, it is just LONG TIME (at least 60 years (!) ) nobody solves such problems using such obsolete units.
Feet and pounds are still good in the US in stores (unfortunately, since they are not used anywhere more
in the world, even in the old Great Britain), but not in Physics and not in education, in general.
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