Mathematics, 20.09.2019 01:00 sleimanabir

If an object is projected vertically upward from ground level with an initial velocity of 320 ft/sec, then its distance s above the ground after t seconds is given by s=-16t^2+320t. for what values of t will the object be more than 1536 feet above the ground?

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If an object is projected vertically upward from ground level with an initial velocity of 320 ft/sec...