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Posted by on Tuesday, May 7, 2013 at 7:01am.

Alice throws a ball straight up with an initial speed of 40 feet per second from a height of 5 feet?
a) Find parametric equations that model the motion of the ball as a function of time.
b) How long is the ball in the air?
c) When is the ball at its maximum height? Determine the maximum height of the ball.

Thanks

  • Pre Calc - , Tuesday, May 7, 2013 at 9:52am

    x(t) = 0
    y(t) = 5 + 40t - 16t^2

    Now just solve for t when y=0

    Find the vertex of the parabola.

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