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12 October, 15:23

A toy truck has a speed of 3 m/s and kinetic of 36 J what is its mass?

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Answers (2)
  1. 12 October, 15:41
    0
    8kg

    Explanation:

    Kinetic energy = 1/2 mv^2

    Where

    M = mass

    V = speed or velocity

    Given

    Kinetic energy = 36

    V = 3m/s

    Therefore

    36 = 1/2 x m x 3^2

    36 = 1/2 x m x 3 x 3

    Multiply through

    36 = m x 9 / 2

    Cross multiply

    36 x 2 = m x 9

    72 = m x 9

    Divide both sides by 9

    72/9 = m x 9/9

    8 = m

    m = 8kg
  2. 12 October, 16:46
    0
    12

    Explanation:

    The equation is w = f * d

    36=3*d

    12=d 12 units is the mass
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