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23 May, 00:00

An object has a velocity of 8 m/s and a kinetic energy of 480 J. What is the mass of the object? (Formula:)

7.5 kg

15 kg

60 kg

120 kg

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Answers (2)
  1. 23 May, 00:05
    0
    An object has a velocity of 8 m/s and a kinetic energy of 480 J. What is the mass of the object?

    We have the following dа ta:

    KE (Kinetic Energy) = 480 J

    m (mass) = ? (in Kg)

    v (speed) = 8 m/s

    15kg
  2. 23 May, 00:20
    0
    The mass is 15kg

    Explanation:

    The formula for kinetic energy is

    K = 1/2*mass*velocity^2

    all we have to do is replace all we know into the formula.

    480 = 1/2 * m * 8^2

    Solving for m gets you that m=15kg
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