A ball is thrown upward with an initial velocity of 13 m/s. At what time does the ball reach the high point in its flight? (Use the approximate value of g = 10 m/s2, and remember that the velocity is equal to zero at the high point.)

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  1. use the kinematic equation vf=vi+-9.8T
    (-9.8 is the true acceleration due to gravity)
    what we know
    then just plug and chug answer should be around 1.326 s

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