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5 September, 02:09

A bullet of mass 4g when fired with a velocity of 50m/s can enter a wall upto a depth of 10cm how much will be the average resistence offered by the wall

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  1. 5 September, 02:27
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    Mass, m = 4g = 0.004 kg

    Velocity, = 50cm/s = 0.5m/s

    Distance, 10cm = 0.1m

    The wall would have to resist the energy acquired by the bullet.

    Kenetic Energy of bullet = Resistance offered by the wall.

    1/2 mv² = Resistance Force * Distance

    (1/2) * 0.04 * 0.5 * 0.5 = F * 0.1

    0.5 * 0.04 * 0.5 * 0.5 = F * 0.1

    0.5 * 0.04 * 0.5 * 0.5/0.1 = F

    0.05 = F

    Therefore, Resistance offered by the wall = 0.05 N
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