Question: If an object is projected upward from ground level with an initial velocity of 112 ft/s,then its height in feet after seconds is given by

If an object is projected upward from ground level with an initial velocity of 112 ft/s,then its height in feet after seconds is given by s(t)=-16t^2+112t. Find the number of seconds it will take to reach its maximum height. & what is the maximum height

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