To solve this problem you must apply the proccedure shown below:
1. The magnitude is the square root of the sum of the squares of the components.
2. By using the information given in the problem above, you can calculate the magnitude as following:
[tex]Magnitude=\sqrt{11^{2}+31^{2}} \\ Magnitude=32.89 \frac{m}{s}[/tex]
Therefore, the answer is: [tex]32.89 \frac{m}{s}[/tex]
