Vector Operations and Magnitudes Quiz
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Questions and Answers

Given vectors C = (1, -2) and D = (0, -4), what is the magnitude of vector C - D?

  • $\sqrt{5}$ (correct)
  • $\sqrt{10}$
  • $\sqrt{13}$
  • $\sqrt{2}$
  • If vector A + B = (3, -1) and vector A - B = (2, 1), what is the magnitude of vector A?

  • $\sqrt{2}$
  • $ rac{\sqrt{26}}{2}$ (correct)
  • $\sqrt{10}$
  • $\sqrt{ rac{29}{2}}$
  • Given vectors A = (-2, 3) and B = (2, 1), what is the magnitude of vector A - B?

  • $\sqrt{2}$
  • $\sqrt{30}$
  • 2$\sqrt{5}$ (correct)
  • 4
  • Which of the following is a correct representation of the vector sum if A=(3,-1), B=(-2,4), and C=(1,2)?

    <p>$(3-2+1, -1+4+2)$ (C)</p> Signup and view all the answers

    Given A=(2, 3) and $\vec{A}-\vec{B}=(5, 1)$. Calculate the vector $\vec{B}$

    <p>(-3, 2) (C)</p> Signup and view all the answers

    Signup and view all the answers

    Study Notes

    Vector Operations and Magnitudes

    • Vector C-D Calculation:

      • Vector C = (1, -2)
      • Vector D = (0, -4)
      • Vector C - D = (1-0, -2-(-4)) = (1, 2)
      • Magnitude of C-D = √(1² + 2²) = √5
    • Vector A Magnitude Calculation:

      • Vector A + B = (3, -1)
      • Vector A - B = (2, 1)
      • Add the two equations: 2A = (5, 0)
      • Vector A = (5/2, 0)
      • Magnitude of A = √((5/2)² + 0²) = 5/2 = 2.5
    • Vector A-B Magnitude Calculation:

      • Vector A = (-2, 3)
      • Vector B = (2, 1)
      • Vector A - B = (-2-2, 3-1) = (-4, 2)
      • Magnitude of A-B = √((-4)² + 2²) = √(16 + 4) = √20 = 2√5

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    Description

    Test your understanding of vector operations and magnitudes with this quiz. You'll work through calculations involving vector addition, subtraction, and magnitude determination. Ideal for students looking to reinforce their grasp on vector mathematics.

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