1. The problem statement, all variables and given/known data A boat needs to sail due north , but the current is flowing southeast at a speed of 20km/hr. In still wate, the boat has a maximum speed of25km/hr . (a) In what direction will the boat actually move (relative to an observer on land)? (b) What's the course (direction) necessary to that ship could travel North ? (c) What is the speed of the boat relative to an observer on land? 2. Relevant equations N/A 3. The attempt at a solution (a) North . (b) East . I using vector theory . (c) Using theorem phythogoras : Speed^2 = 25^2 - 20^2 = 225 speed = 15 km/hr Am I correct ? PLease give me the answer .