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Assume that a river has straight and parallel banks and that the current is 0.75 m/s. Drifiting down the river, you fall out of your boat and immediately grab on to a log. You hold on for 40 seconds, and then swim after the boat with a speed relative to the water of 0.95 m/s. The distance of the boat downstream from the log when you catch it is:

ANS: 54 meters.

How did they arrive at this answer? (no work is shown) I thought it would be 40*.75 (since the boat is moving - i don't see what it has to do with your speed of .95 since that would only effect time taken to reach the boat)

Any help here is appreciated.