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Physics HELP

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A railroad car with a mass of 2000kg is rolling at a speed of 15m/s. What force would be required to stop the car in 10 seconds?

a)13.3 N
b)2,000 N
=c)3,000 N
d)30,000 N

  • english HELP -

    Rewrite the following sentences to ensure that the pronouns are used appropriately and that they have antecedents. If the sentence is correct, type "correct". (Each question is worth one point)
    1-It said on the news that the economy was improving.
    2- Waitresses appreciate tips when they get them.
    3-In colonial America, the merchants used to advertise to you with pictorial signs.

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