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Home Q & A Board Science-Related Homework Help Physics
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Tonjia Tonjia
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11 years ago
The question says: Water from a fire hose follows the path shown in the figure below.  Determine the velocity of the water as it leaves the hose.  It shows half of a parabola, with half the distance as 20m, and max height of 56m (with 6m being the distance it takes for the water to reach max height and head back down).

Can anyone tell me where to start?!  I'm at a loss!
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#1
11 years ago
You've got an angle, and a known 'max' height at a distance.
Gravity will give you the vertical velocity.
From that, and the angle you can work out the horizontal component
of the total. (Assume horizontal velocity is constant.)
Then draw the vector triangle.
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