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14 March, 10:41

If velocity is cut in half, how is the kinetic energy affected

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Answers (2)
  1. 14 March, 12:55
    0
    Using the Kinetic Energy formula:

    K. E = 1/2 (mv^2)

    It is shown that kinetic energy is directly proportional to the square of velocity. Which means that if the velocity was reduced to half, kinetic energy would be 1/4 of the original value. To state an example:

    let: m = 1; v = 2

    Substituting the values would give us:

    K. E = 1/2 ((1) (2) ^2)

    K. E = 2

    Halving the value of velocity would give us the following:

    K. E = 1/2 ((1) (1) ^2)

    K. E = 0.5

    As seen, K. E was reduced to 1/4 of the original value.
  2. 14 March, 13:42
    0
    Since the K. E proportional to the square of the velocity

    so if the velocity cut in half the K. E will equal 1/4 the initial value
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