can you help me through this?
A boat moves through a river at 7.0 m/s relative to the water, regardless of the boat's direction. If the water in the river is flowing at 3.5 m/s, how long does it take the boat to make a round trip consisting of a 250 m displacement downstream followed by a 250 m displacement upstream?
physics - bobpursley, Sunday, November 7, 2010 at 6:35pm
= 250m/(10.5m/s)+ 250/(3.5m/s)