Tuesday
September 16, 2014

Homework Help: Math

Posted by Smith on Wednesday, February 22, 2012 at 1:33pm.

Beaufort Scale and Wind Effects

0 Smoke rises vertically
1 Smoke shows wind direction
2 Wind felt on face
3 Leaves move, flags extend
4 Paper, small branches move
5 Small trees sway, flags beat
6 Large branches sway, flags beat
7 Large branches sway, walking is difficult
8 Twigs break, walking is hindered
9 Slight roof damage
10 Severe damage, trees uprooted
11 Widespread damage
12 Devastation


The Beaufort scale was devised by Frances Beaufort in 1805 to measure wind speeds. The scale is numbered from 0 to 12, and represents wind speeds in the open, 33 feet above ground. The Beaufort scale, B, can be modeled by the function
b=1.9(x+8-5.4)

where x is the speed of the wind in miles per hour.
Sketch the graph of this function.

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