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terainfizik
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Homework Statement
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?
Homework Equations
N/A
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 .