If the momentum of a 1000 kg car travelling at 10 m/s was transferred completely to a 20.0 kg traffic barrier, what would the final speed of

Question

If the momentum of a 1000 kg car travelling at 10 m/s was transferred completely to a 20.0 kg traffic barrier, what would the final speed of the barrier be

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Ngọc Hoa 5 months 2021-09-02T17:55:17+00:00 1 Answers 2 views 0

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    2021-09-02T17:56:52+00:00

    Answer:

    500 m/s

    Explanation:

    Momentum, p is a product of mass and velocity. From law of conservation of momentum, the initial momentum equals final momentum

    m_1v_1=m_2v_2\\1000*10=20v_2\\v_2=10000/20=500 m/s

    Here m and v represent mass and velocity respectively and subscripts 1 and 2 represent car and barrier respectively

    Therefore, the velocity of barrier will be 500 m/s

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