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

[PLAIN]http://img690.imageshack.us/img690/5817/problem001.jpg [Broken]

2. Relevant equations

Chain rule : dv/dt=dv/dr*dr/dt

Integration

3. The attempt at a solution

I can only find the speed (the magnitude of the velocity), that is

[PLAIN]http://img268.imageshack.us/img268/4996/95620213.jpg [Broken]

I have no idea how to consider its direction.

Does it involve vector integration or higher mathematic knowledge?

Help me, please, I'm dying to know the answer, thank you. :!!)

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# Homework Help: Velocity of a particle when acceleration based on displacement

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