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**jennifer1004** A straight river is 20 m wide. The velocity of the river at (x, y) is $\displaystyle v=[-(3x(20-x))/(100)]j m/min, 0<=x<=20$

A boat leaves the shore at (0, 0) and travels through the water with a constant velocity. It arrives at the opposite shore at (20, 0). The speed of the boat is always radical 20 m/min.

a. Find the velocity of the boat.

b. Find the location of the boat at time t.

c. Sketch the path of the boat.

I figured the velocity of the boat, since traveling in the positive direction on the x axis, would also be radical 20 m/min.