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18 August, 22:34

A person drives an automobile with a mass of 450 kilograms at a velocity of 26 meters per second. The driver accelerates to a velocity of 30 meters per second. The difference in the automobile's kinetic energy between the two velocities is joules. You may use the calculator.

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  1. 19 August, 01:58
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    Ec₁=mv₁²/2=450*26²/2=225*676=152100 J

    Ec₂=mv₂²/2=450*30²/2=225*900=202500 J

    ΔEc=Ec₂-Ec₁=202500-152100=50.4 kJ
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