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6 April, 09:46

A 950 kg car is initially moving at 95 km/hr

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  1. 6 April, 09:47
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    Mass of the car is 950 kg and therefore the weight of the car is 9500 N.

    The initial speed of the car is 95 km/hr

    Converting this to m/s

    95 * 1000/3600 = 26.39 m/s

    To calculate the resultant force after collision we subtract the stopping force from the weight of the of the car.

    Resultant force = 9500 N - 3860 N

    = 5640 N

    Then we can calculate the power,

    power = force multiplied by distance then divided by time

    this is equivalent to force multiplied by velocity (distance divided by time),

    Therefore power = force * velocity

    stopping power will therefore be 5640 N * 26.39 m/s = 148839.6 watts

    Hence the stopping power is 148839.6 Watts or 148.839 kilo watts
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