physics

If a car has a mass of 400 kg and a velocity of 30 m/s to the east, what is the magnitude of its momentum?

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  1. If a unit vector in the x or east direction is i, the y direction or north is j, and the z direction or up
    is k, then:
    momentum vector=12,000 i + 0 j + 0 k
    magnitude = sqrt (12,000^2+0^2+0^2)
    =12,000 kg m/s

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    posted by Damon

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