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5 December, 02:30

Comic strip hero superman meets an asteroid in outer space and hurls it at 100m/s. he has a mass of "m". The astroid has a mass of 1000m. Determine superman's velocity after throwing the astroid.

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  1. 5 December, 02:40
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    v = - 10⁵ m/s

    Explanation:

    given,

    speed of asteroid, v' = 100 m/s

    mass of superman = m

    mass of asteroid, M = 1000 m

    recoil velocity of superman, v=?

    using conservation of momentum.

    m u + M u' = m v + M v'

    initial velocity of asteroid and superman is equal to zero

    0 + 0 = m v + 1000 m x 100

    m v = - 100000 m

    v = - 10⁵ m/s

    superman's velocity after throwing the asteroid is equal to v = - 10⁵ m/s
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