Displacement, velocity, acceleration and force as vectors

Displacement, velocity, acceleration and force as vectors Quiz

Spec 2.2 · Edexcel International A Level Maths: Quiz

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5 questions, one answer each

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  1. 1. A particle has velocity (5i+12j)(5\mathbf{i}+12\mathbf{j}) m s−1^{-1}. What is its speed?

    • A. 17 m s⁻¹
    • B. 7 m s⁻¹
    • C. 169 m s⁻¹
    • D. 13 m s⁻¹

  2. 2. Constant velocity (2i−j)(2\mathbf{i}-\mathbf{j}) m s−1^{-1} from the origin. Position after 5 s?

    • A. (2i−j)(2\mathbf{i}-\mathbf{j}) m
    • B. (10i−5j)(10\mathbf{i}-5\mathbf{j}) m
    • C. (7i+4j)(7\mathbf{i}+4\mathbf{j}) m
    • D. (0.4i−0.2j)(0.4\mathbf{i}-0.2\mathbf{j}) m

  3. 3. Velocity changes from (i+2j)(\mathbf{i}+2\mathbf{j}) to (7i−4j)(7\mathbf{i}-4\mathbf{j}) m s−1^{-1} in 3 s. Find the acceleration.

    • A. (2i−2j)(2\mathbf{i}-2\mathbf{j}) m s−2^{-2}
    • B. (2i+j)(2\mathbf{i}+\mathbf{j}) m s−2^{-2}
    • C. (6i−6j)(6\mathbf{i}-6\mathbf{j}) m s−2^{-2}
    • D. (−2i+2j)(-2\mathbf{i}+2\mathbf{j}) m s−2^{-2}

  4. 4. A particle with position (3t)i+(2t−4)j(3t)\mathbf{i}+(2t-4)\mathbf{j} is due east of the origin when:

    • A. t=0t=0
    • B. t=2t=2
    • C. t=4/3t=4/3
    • D. t=3t=3

  5. 5. Which of these is a scalar?

    • A. Velocity
    • B. Displacement
    • C. Speed
    • D. Acceleration

Quiz