Answer:
17 mi/hr, downstream
Explanation:
We can take downstream as the positive direction. With this system of coordinates, we have:
[tex]v_c = + 5 mi/h[/tex] is the velocity of the canoe, downstream
[tex]v_s = +12 mi/h[/tex] is the velocity of the water, also downstream
Since both velocities are in the same direction, the resultant velocity of the canoe will simply be the sum of the two velocities:
[tex]v=v_c+v_s=5 mi/h+12 mi/h=+17 mi/h[/tex]
and the positive sign means downstream.
