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Calculating energy changes (E)

Quiz by Oak National Academy: GCSE Combined Science OCR Foundation

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6 questions
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  • Q1
    The principle of ______ states that total amount of energy at the end of a process is always the same as the total amount of energy at the beginning.
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    30s
  • Q2
    A rock on a cliff has 1600 J of energy in the gravitational store. It falls onto the ground below and no energy is dissipated. Which of the following is the correct energy transfer during the fall?
    Less than 1600 J is transferred from the gravitational to the kinetic store.
    More than 1600 J is transferred from the gravitational to the kinetic store.
    More than 1600 J is transferred from the kinetic to the gravitational store.
    1600 J is transferred from the gravitational to the kinetic store.
    1600 J is transferred from the kinetic to the gravitational store.
    30s
  • Q3
    A 0.20 kg ball is thrown vertically upwards and reaches a maximum height of 2.1 m. Assuming that no energy is dissipated, the ball’s kinetic energy at the start is ______ J. Use g = 10 N/kg.
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    30s
  • Q4
    A plate is dropped. If no energy is dissipated during the fall, the final speed of the plate before it hits the ground is 4 m/s. If energy is dissipated, which of the following statements is correct?
    The final speed will be less than 4 m/s.
    It is impossible to say whether the final speed will be more or less than 4 m/s.
    The final speed will still be 4 m/s.
    The final speed will be more than 4 m/s.
    30s
  • Q5
    A child sledges down a hill of height 12 m. The total mass of child and sledge is 30 kg. Assuming no energy is dissipated, the kinetic energy at the bottom of the hill is ______ J. Use g = 10 N/kg.
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    30s
  • Q6
    A mountain goat with a mass of 52 kg jumps vertically upwards, leaving the ground at speed 6.0 m/s. The maximum height that the goat can reach is ______ m. Use g = 10 N/kg.
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    30s

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