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physics

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what is the mass of a vehicle traveling at 25 km/hr with a kinetic energy equal to 1 x 10 to the 4th power J?

  • physics - ,

    V = 25km/h = 25000m/3600s = 6.94 m/s.

    KE = 0.5m*V^2 = 10^4 J.
    0.5m*6.94^2 = 10000
    24.08m = 10000
    m = 415.3 kg.

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