Word problem

  • Thread starter Miike012
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  • #1
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Posted a picture... the picture consists of the word problem and the triangle is how I interpreted the problem....

Vector A Components: (0,10)
Vector B Components: ( Cos60*6,Sin60*6)

Vector C Components: (Cos60*6 = 3 , Sin60*6 + 10 = 15) ... ( 3 , 15 )

Vector C = (9 + 225) ^(1/2) = 15

The true answer is 5.66....
What did I do wrong?
 

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  • #2
Hootenanny
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Posted a picture... the picture consists of the word problem and the triangle is how I interpreted the problem....

Vector A Components: (0,10)
Vector B Components: ( Cos60*6,Sin60*6)
Correct up until here.

You want to find vector [itex]C[/itex] such that [itex]B+C = A[/itex]. Do you understand why?

Also you should note that the questions asks for the final displacement, which is a vector, not a scalar.
 
  • #3
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Would the resultant vector be A at (0,10) because that is where the final position lies?
 
  • #4
Hootenanny
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Would the resultant vector be A at (0,10) because that is where the final position lies?
Yes, but you want to find [itex]C[/itex]
 

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