An object is thrown down from a height of 208 feet with a velocity of 72 feet per second. The objects distance from the ground, ss , at time tt seconds after being thrown down is given by the function  s(t)=−16t2−72t+208 How many seconds after being thrown down will the object hit the ground?

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 An object is thrown down from a height of 208 feet with a velocity of 72 feet per second. The objects distance from the ground, ss , at time tt seconds after being thrown down is given by the function

 s(t)=−16t2−72t+208

How many seconds after being thrown down will the object hit the ground?

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