(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

I figured I'll try this again.

A battleship steams due east at 24 km/h. A submarine 4.0 km away fires a torpedo that has a speed of 50 km/h. If the ship is seen 20º east of north, in what direction should the torpedo be fired to hit the ship?

2. Relevant equations

Battleships motion: x = x[itex]_{}0[/itex] + v[itex]_{}x[/itex]t

Torpedo's motion: x' = v cos [itex]\phi[/itex] t

y' = y[itex]_{}0[/itex]' + v sin [itex]\phi[/itex] t

3. The attempt at a solution

In my earlier thread, someone suggested that this is a related rate problem. I am not sure how to do that.

I tried vector addition, but two are velocity vectors (ship and torpedo's velocity) and one is a position vector (the distance between them). This does not seem like a difficult problem, but I need some guidance real bad here, it's halting my progress to doing other problems because I am too stubborn. I appreciate any useful help...thank you

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# Homework Help: Relative Motion problem driving me crazy

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