An 85 kg paratrooper once fell 370 m from an airplane without a working parachute. He landed in snow and suffered only minor injuries. Assum

Question

An 85 kg paratrooper once fell 370 m from an airplane without a working parachute. He landed in snow and suffered only minor injuries. Assume that the speed at impact was 56 m/s, terminal velocity, and that the force on him by the snow was at the survivable limit of 1.2×1051.2×105 N. What is the magnitude of the impulse on him from the snow? Enter your answer in kg m/s, but do not enter units.

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Tryphena 4 years 2021-08-09T19:52:22+00:00 1 Answers 22 views 0

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    2021-08-09T19:53:53+00:00

    Answer:

    -4760kgm/s

    Explanation:

    56m/s  will be the man’s speed when touch the snow, therefore:

    v_{a} =56m/s

    The final velocity is zero

    v_{b} =0m/s

    The mass:

    m=85kg

    Now we can apply impulse relationship which stated that:

    Δp=mΔv

    Δp=m(v_{b} -v_{a} )

    substitute the values

    Δp=85(0-56)

    Δp=-4760kgm/s upward

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