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principles of physics

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A truck moves with a certain momentum. If both its speed and its mass are doubled, how much greater is its momentum?
A) Two times.
B) Four times.
C) Eight times.
D) Unchanged, the same.

  • principles of physics -

    M = mV.
    M = 2m*2V = 4mV.
    Therefore the ans. is B.

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