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BOATS AND STREAMS


Important facts:

1)In water, the direction along the stream is called down stream.

2)Direction against the stream is called upstream.

3)The speed of boat in still water is U km/hr and the speed of stream is V
km/hr then

speed down stream =U + V km/hr
speed up stream = U – V km/hr

Formulas:

If the speed down stream is A km/hr and the speed up stream is B km/hr then

speed in still water = ½(A+B) km/hr

rate of stream =1/2(A-B) km/hr

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