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What average force is required to stop an 1700 kg car in 7.0 s if the car is traveling at 75 km/h?

  • Physics - ,

    First change the 75 km/h to 20.83 meters per second

    (Average Force)* Time = Momentum change
    = 1700 kg * 20.83 m/s

    Solve or the Average Force, in Newtons

    1700(m/s)*20.83(kg)/7.0(s) = ___? N

    In pounds, it's about 2300

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