How long does it take the boat to cross the river of 80 m. wide at 4 m/s?
During this time, how far would the boat be carried downstream at 3 m/s?
Suppose that the river was moving with a velocity of 3 m/s, North and the motor boat is moving with a velocity of 4 m/s, East. If the width of the river is 80 meters wide, then how much time does it take the boat to travel shore to shore? What distance downstream does the boat reach the opposite shore?
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