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28 January, 05:19

1. What is the kinetic energy of a vehicle that has a mass of 2000.0 kg that is driving at a constant speed of 40.0 m/s?

2. What is the kinetic energy of a vehicle with a constant speed of 35.0 m/s with a mass of 4500 kg?

3. What is the mass of an animal with a kinetic energy of 12,500 J and a constant speed of 15.0 m/s?

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Answers (2)
  1. 28 January, 05:34
    0
    1. K=1.6•10⁶J

    2 K=2.7•10⁶

    3. m=0.1kg

    Explanation:

    1. m=2000 kg

    speed=40 m/s

    K=½mv²

    K=½ (2000•1600) J=1.6 10⁶ J

    2. speed=35m/s

    m=4500 kg

    K=½ (4500•1225) = 2.7•10⁶

    3. K=12,500J

    speed=15 m/s

    m=2K/v²

    m = 25,000J/225m²/s²=0.1 kg
  2. 28 January, 05:40
    0
    1. K=1.6•10⁶J

    2 K=2.7•10⁶

    3. m=0.1kg
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Home » Physics » 1. What is the kinetic energy of a vehicle that has a mass of 2000.0 kg that is driving at a constant speed of 40.0 m/s? 2. What is the kinetic energy of a vehicle with a constant speed of 35.0 m/s with a mass of 4500 kg? 3.
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