## 10x-11 Dead Reckoning

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In Unit 5 we briefly mentioned dead reckoning.
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Dead reckoning is the method that mariners used to use to estimate their position at sea.
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They did this by keeping a log book of the direction they were heading,
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they speed they were moving at, and the duration that they moved at that speed and direction.
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In one particular journey where a ship wants to get from start to finish
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the ship starts out by going east at a speed of 12 k/h for 2.5 hours.
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The ship then heads south at 20 m/h for 1 hour,
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east at 15 m/h for 3 hours and then finally northeast at 8 k/h for 1 hour.
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My question is what's the straight-line distance between start and finish.
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By straight-line distance, I mean this distance from start to finish.
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Not the total distance the ship traveled, because the ship took a slightly inefficient route.
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Now, this is a sort of tricky problem, but as long as you keep track of your trignometry
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and geometry, and you will have to make some right triangles,
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you'll be able to get this one right. Enter your answer here in kilometers.
Tytuł:
Video Language:
English
Team:
Udacity
Projekt:
PH100 - Intro to Physics
Duration:
01:06
 Amara Bot added a translation

• Amara Bot