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14 January, 08:29

A rocket ship at rest in space gives a short blast of its engine, firing 50 kg of exhaust gas out the back end with an average velocity of 400 m/s. What is the change in momentum of the rocket during this blast?

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  1. 14 January, 08:46
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    20,000 Ns

    Explanation:

    mass of exhaust gases, m = 50 kg

    velocity of exhaust gases, v = 400 m/s

    The momentum of a body is defined as the measurement of motion of body. mathematically, it is defined as the product of mass off the body an its velocity.

    change in momentum of rocket = final momentum - initial momentum

    = m x v - 0

    = 50 x 400

    = 20,000 Ns
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