February 19, 2017

Homework Help: Science

Posted by Mat on Tuesday, October 2, 2007 at 4:51pm.

We have a problem in AP Physics that we just can't get. It has to do with vector addition. The problem is:

If aA+bB+C=0, find the magnitudes of a and b.

*A, B, and C are vectors*
*i and j are unite vectors*

How is that possible without a second equation for the relationship between a and b? You can't do substitution or anything. And by lokking at it for an extended period of time, we found that a=5 and b=7 works, but we don't know how to find that using algebra.


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