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Physics, 26.03.2021 06:20 laurabwhiddon

An object is propelled vertically upward with an initial velocity of 84 feet per second. The height h (in feet) of the object after a seconds is given by h(t)=-16t^2+ 76t. After how many seconds will the object strike the ground?

An object is propelled vertically upward with an initial velocity of 84 feet per second. The height

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