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13 November, 16:19

Calculate the impulse exerted when a 1-kg object falls on your foot if the contact time is 0.1 sec. (Hint: first find the weight of the object)

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  1. 13 November, 16:45
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    The weight of an object is

    (its mass) x (acceleration of gravity).

    The weight of a 1 kg object on Earth is (1 kg) x (9.8 m/s²) = 9.8 newtons.

    When a force of 9.8 newtons acts for 0.1 second,

    the impulse imparted to the unfortunate toe is

    0.98 newton-second = 0.98 kg-m/s
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