Physics

10th -

11thgrade

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Physics O Level: Work, Energy, Power and Efficiency PART 1

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8 questions

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  • 1. Multiple Choice
    1 minute
    1 pt

    Kinetic energy of a moving car equals to:

    (1/2) X (mass of the car) X (velocity of the car)2

    (1/2) X (mass of the Earth) X (velocity of the Earth)2

    (1/2) X (mass of the road) X (velocity of the road)2

    (1/2) X (mass of the wind) X (velocity of the wind)2

  • 2. Multiple Choice
    1 minute
    1 pt

    Gravitational potential energy of a ball on a cliff equals to:

    There are two correct answers.

    (mass of the ball) X (height of the cliff)

    (weight of the ball in Newton) X (height of the cliff)

    (mass of the cliff) X (gravitational field strength on Earth) X (height of the cliff)

    (mass of the ball) X (gravitational field strength on Earth) X (height of the cliff)

  • 3. Multiple Choice
    1 minute
    1 pt
    Image

    A ball is on top of a cliff. The gravitational field strength is 10N/kg. What is its total gravitational potential energy when it is at the top of the cliff.

    1000Joules

    10 000Joules

    100Joules

    10Joules

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