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18 May, 20:14

A person wearing a shoulder harness can survive a car crash if the acceleration is smaller than - 300 m/s. assuming constant acceleration how far must the front end of the car collapse if 2 it crashes while going 101 km/hr?

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  1. 18 May, 21:24
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    To solve this problem, we use the equation:

    d = (v^2 - v0^2) / 2a

    where,

    d = distance of collapse

    v0 = initial velocity = 101 km / h = 28.06 m / s

    v = final velocity = 0

    a = acceleration = - 300 m / s^2

    d = (-28.06 m / s) ^2 / (2 * - 300 m / s^2)

    d = 1.31 m
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