SOLUTION: In still water, Maria can paddle at the rate of 7 km/h. The current in which she paddles has a speed of 4 km/h a. At what velocity does she travel downstream? b. Using vecto

Algebra ->  Vectors -> SOLUTION: In still water, Maria can paddle at the rate of 7 km/h. The current in which she paddles has a speed of 4 km/h a. At what velocity does she travel downstream? b. Using vecto      Log On


   

Question 1201410: In still water, Maria can paddle at the rate of 7 km/h. The current in which she paddles has a speed of 4 km/h
a. At what velocity does she travel downstream?
b. Using vectors, draw a diagram that illustrates her velocity going downstream.
c. If Maria changes her direction and heads upstream instead, what is her speed? Using vectors, draw a diagram that illustrates her velocity going upstream.
Answer by ikleyn(52775) About Me  (Show Source):
You can put this solution on YOUR website!
.

(a) The effective downstream velocity is the sum        7 + 4 = 11 km/h  (relative to the banks of the river).


(c) The effective upstream   velocity is the difference 7 - 4 = 3 km/h  (relative to the banks of the river).

Do the rest on your own.

To make illustrations / diagrams, use a pen (or a pencil) and a paper.