## 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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