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Physics Please help!

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the coefficient of static friction between the coffee cup and the roof of a car is 0.28, If the maximum acceleration the car can have without causing a cup of coffee (on the top of the car) to slide is 2.7 m/s^.
What is the smallest amount of time in which the person can accelerate the car from rest to 19 and still keep the coffee cup on the roof?

  • Physics Please help! -

    What speed dimensions are supposed to follow the number V = 19?

    If the acceleration cannot exceed a = 2.7 m/s^2, the time to acclerate to velocity V must be greater than

    You do not need to know the coefficient of friction to answer this question. They threw it in to confuse you.

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