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3 March, 21:27

The mass of a high speed train is 4.5*105kg, and it is traveling forward at a velocity of 8.3*101m/s. given that momentum equals mass times velocity, determine the values of m and n when the momentum of the train (in kg⋅m/s) is written in scientific notation

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  1. 3 March, 23:43
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    In this item, we can rewrite the mass of the high speed train as 4.5 x10⁵ kg. Also, the velocity of the train is rewritten as 8.3 x 10¹ m/s. As given above, the momentum of the train is equal to the product of the two parameters.

    Momentum = (4.5 x 10³ kg) (8.3 x 10¹ m/s)

    Momentum = 3.735 x 10⁵ kg m/s

    In the right number of significant figures, the answer would be 3.7 x 10⁵ kg m/s. The value of m is therefore 3.7 and n is equal to 5.
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