Solving Vector C with Unit Vectors | Cross Product Help

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SUMMARY

The discussion focuses on expressing the vector C, defined as C = 3.00A - 4.00B, using unit vectors. The solution provided indicates that C can be represented as C = 12.0i + 14.9j. Participants emphasize the necessity of calculating the unit vectors of A and B by dividing each component by the respective magnitudes of these vectors to derive the components of C accurately.

PREREQUISITES
  • Understanding of vector operations, specifically vector addition and subtraction.
  • Knowledge of unit vectors and how to calculate them.
  • Familiarity with the concept of vector magnitude.
  • Basic understanding of the cross product in vector mathematics.
NEXT STEPS
  • Learn how to calculate vector magnitudes for given components.
  • Study the process of deriving unit vectors from standard vectors.
  • Explore the properties and applications of the cross product in physics.
  • Practice problems involving vector addition and subtraction using unit vectors.
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Students studying physics or mathematics, particularly those tackling vector analysis and homework involving vector operations.

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Homework Statement



use unit vectors to express the vector C where C=3.00A-4.00B
the answer is apparently C=12.0i + 14.9j

Homework Equations



cross product

The Attempt at a Solution



i have no idea where to even start how is it possible to find the i orj because i don't even know the components of A or B
 
Physics news on Phys.org
To find the unit vector you're going to have to divide each component of the vector by the magnitude of the vector.
 

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