Variable forces and power

Variable forces and power Quiz

AQA A-Level Further Maths: Quiz

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5 questions, one answer each

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  1. 1. Find the work done by F=6xF=6x N from x=0x=0 to x=3x=3 m.

    • A. 1818 J
    • B. 5454 J
    • C. 99 J
    • D. 2727 J

  2. 2. Find the work done by F=4x+1F=4x+1 N from x=1x=1 to x=3x=3 m.

    • A. 1313 J
    • B. 1818 J
    • C. 2121 J
    • D. 3636 J

  3. 3. An engine of 24 kW drives a car at 12 m s−112\text{ m s}^{-1}. Find the driving force.

    • A. 20002000 N
    • B. 22 N
    • C. 288 000288\,000 N
    • D. 500500 N

  4. 4. A lorry's engine works at 60 kW against a constant resistance of 2000 N. Find its greatest speed.

    • A. 3.3 m s−13.3\text{ m s}^{-1}
    • B. 120 m s−1120\text{ m s}^{-1}
    • C. 30 m s−130\text{ m s}^{-1}
    • D. 60 m s−160\text{ m s}^{-1}

  5. 5. A 1000 kg car, power 20 kW, resistance 800 N. Find its acceleration at 10 m s−110\text{ m s}^{-1}.

    • A. 2.0 m s−22.0\text{ m s}^{-2}
    • B. 1.2 m s−21.2\text{ m s}^{-2}
    • C. 0.8 m s−20.8\text{ m s}^{-2}
    • D. 1.6 m s−21.6\text{ m s}^{-2}

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