A car with a crashtest dummy inside travels at 40.23 m/s (90 mph) toward a stone wall during a crash test. When it strikes the wall, the car

Question

A car with a crashtest dummy inside travels at 40.23 m/s (90 mph) toward a stone wall during a crash test. When it strikes the wall, the car takes 0.70 s to stop. Calculate the deceleration of the car.

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Tài Đức 1 year 2021-09-03T19:32:23+00:00 1 Answers 11 views 0

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  1. thnahdat
    0
    2021-09-03T19:34:04+00:00
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    Answer:

    The answer is  [tex]-57.47m/s^{2}[/tex]

    Explanation:

    In the question we are  to solve for the deceleration  of the car on impact.

    Given data

    [tex]speed= 40.23m/s\\[/tex]

    [tex]time[/tex] =[tex]0.70second[/tex]

    To determine the deceleration  we apply,

    [tex]acceleration = \frac{speed}{time} \\\\acceleration= \frac{40.23}{0.7}[/tex]

    [tex]acceleration = -57.47m/s^{2}[/tex]

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