Relative Motion - A boat travels up a river a distance d and then comes back to the origin
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A boat travels up a river a distance d and then comes back to the origin.
The maximum speed of the boat relative to the water is v. And the river has scalar speed u (u < v).
What is the minimum time for this trip?
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A boat travels up a river a distance d and then comes back to the origin.
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The upstream (the boat goes against the flow) speed is v-u
The time to ...
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