during a crash, an airbag inflates to stop a dummys forward motion. the dummy mass is 75 kg. if the net force is on the dummy is 825 N towar

Question

during a crash, an airbag inflates to stop a dummys forward motion. the dummy mass is 75 kg. if the net force is on the dummy is 825 N toward the rear of the car, what is the dumys deceleration

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Gia Bảo 4 years 2021-09-03T19:05:06+00:00 2 Answers 159 views 0

Answers ( )

  1. thanhcong
    0
    2021-09-03T19:06:31+00:00
    Reply

    Answer:

    11 m/s^2.

    Explanation:

    Given:

    Mass = 75 kg

    Force = 825 N

    F = m × a

    a = 825 ÷ 75

    = 11 m/s^2.

  2. diemkieu
    0
    2021-09-03T19:06:45+00:00
    Reply

    Answer:

    11 m/s²

    Explanation:

    Deceleration: This can be defined as the rate of decrease of velocity. The S.I unit of deceleration is m/s².

    From the question,

    F = md ………………… Equation 1

    Where F = Force acting on the dummy towards the rear of the car, m = mass of the dummy, d = deceleration of the dummy.

    make d the subject of the equation

    d = F/m…………… Equation 2

    Given: F = 825 N, m = 75 kg.

    substitute into equation 2

    d = 825/75

    d = 11 m/s²

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