(adsbygoogle = window.adsbygoogle || []).push({}); 1. Two boats start out 800 miles apart with boat A directly to the west of boat B. At the same time both boats start moving with boat A travelling to the east at 40mph while boat B travels north at 20mph. Determine if the distance between the boats is increasing, decreasing, or not changing after the following travel times: (a) 7 hours (b) 16 hours (c) 25 hours

2. I attempted to break apart their distances travelled by using component vector analysis. The distance between the two boats is the hypotenuse of whatever triangle they produce on the graph at a certain time. We want to find d'.

3. d'=? I park boat A at origin, therefore its cartesian coordinates are (0, 0), so boat B must be at (0, 800)

For part (a) I use vector components: A in x-direction: 400(7)=280 x-direction

So A is at (280, 0) since it does change in relation to y-axis (vice-versa for B)

B in y-direction: 20(7)=140 so B is (800, 140)

Base distance is 800-280=520 Height is just 140

I got the distance between them by using the distance formula: d=square root(520^2 + 140^2)= 538.516miles

How do I proceed to find h' ?

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# Homework Help: Morphing Triangle Problem

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