Answer:
The average gradient is [tex]0.5 \frac{m}{Km}[/tex]
Step-by-step explanation:
We have two important data to solve this problem:
1- Stream begins at an elevation (y) of 200 m
2- Stream flows a distance of (x) 400 km.
We need to calculate the average gradient. Gradient definition is the drop in elevation of a stream divided by the distance the water travel.
So, gradient (g) will be elevation (y) divided by distance (x).
[tex]g = \frac{y}{x}=\frac{200m}{400Km} =\frac{2m}{4Km}[/tex]
[tex]g = 0.5 \frac{m}{Km}[/tex]
Finally, the average gradient is [tex]0.5 \frac{m}{Km}[/tex].
