- #1

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 .