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Relative Motion - A boat travels up a river a distance d and then comes back to the origin

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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Hello and thank you for posting your question to Brainmass.

The upstream (the boat goes against the flow) speed is v-u

The time to ...

Solution Summary

A boat travels up a river a distance d and then comes back to the origin.

$2.19