brobinson1250 brobinson1250

23-01-2024
Physics

contestada

A man sails a boat 21 km upstream and 28 km downstream, taking 14 hours each time. Find the velocity of the stream.

(a) 2 km/h
(b) 3 km/h
(c) 4 km/h
(d) 5 km/h

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