Saturday, November 24, 2007

Irodov Problem 1.100

a) From (1) it is clear that the boat will never completely stop, it will stop only after infinite time.
b) From (2) by setting v=0 (the time when the boat stops) we can find the distance covered as,
c) the time average of velocity (mean velocity) can be evaluated by . If the the velocity decreases time then from (1) we have

Now we can calculate the mean velocity as,

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