Vectors, and some weried stuff that I dont get

  • Thread starter Oleg09
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  • #1
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http://img30.imageshack.us/img30/1265/34711100.png [Broken]


What is Vector D?? I only see Vector A and B, not the invisible one? Well you can define a new coridnate system X prime and Y prime and not worry about the degrees. But the other stuff is all greek to me. Book doesnt help :(, so any help is appreciated
 
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Answers and Replies

  • #2
Nabeshin
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Since this is homework, in the future it should be posted in the homework help section.

It looks to me like D is the vector constructed as per the rule given on the left hand side, namely 4.7 (A+B).

Keep in mind that while it may seem like a good idea to use a tilted coordinate axis defined by A and B, the question asks for the components of the resultant vector D in terms of x and y, the original coordinate axes. So you will have to deal with the angle eventually.
 
  • #3
Integral
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You are given a "recipe" for computing D. Simply do the specified operations. The result is D.
 
  • #4
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It looks to me like D is the vector constructed as per the rule given on the left hand side, namely 4.7 (A+B).

4.7A + B, without the parentheses.
 
  • #5
Nabeshin
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4.7A + B, without the parentheses.

Right. Order of operations gets me every time.
 

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