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Find velocity and time, help needed

  1. Jul 5, 2012 #1
    1.Assuming a constant rate of acceleration due to gravity of 32 feet per second per
    second, find the initial velocity needed to launch a projectile from the surface of the
    earth to a height of 900 feet.

    2. Suppose that the probability distribution function for customers waiting to be
    seated at a certain restaurant on a certain evening has the form f(t) = ce^-ct for
    t > 0, where c = 1/10 is the reciprocal of the average waiting time in minutes. Find
    the time T such that exactly 5% of customers wait longer than T minutes to be
    seated. Round your answer to the nearest minute.
    Last edited: Jul 5, 2012
  2. jcsd
  3. Aug 4, 2012 #2


    Staff: Mentor

    Locking a thread that possibly includes a question from a take-home exam.
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