SOLUTION: 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?
Algebra.Com
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.
**************************************************************************
Do not try to revive a corpse, which is not alive just more than 60 years.
**************************************************************************
RELATED QUESTIONS
A water skier skis over the ramp shown in the figure at a speed of 30 feet per second.... (answered by ikleyn)
The arch of a bridge is in the shape of a semi-ellipse, with its major axis at the water... (answered by greenestamps)
A skateboarder is building a ramp. If the ramp is 12.5 feet tall and 15 feet long how... (answered by Cromlix)
The cabels of a suspension bridge are in the shape of a parabola. The towers supporting... (answered by solver91311)
A projectile is fired at an angle of 30 degrees above the horizontal from the top of a... (answered by ikleyn)
A building is 50 feet high. At a distance away from the building, an observer notices... (answered by Theo)
A boat pulls a water skier at a speed of 30 ft/sec. When it reaches the end of the lake, (answered by ankor@dixie-net.com)
Please help me:
A satellite dish shaped like a parabola is 12 feet across and 4 feet... (answered by scott8148)
A satellite dish shaped like a parabola is 12 feet across and 4 feet deep. How high above (answered by scott8148)