Question

A flare is launched upward with an initial velocity of 80 ft/sec from a height of...

A flare is launched upward with an initial velocity of 80 ft/sec from a height of 224 ft. Its height in feet
after t seconds is given by h t t t ( ) = − + + 16 80 224. 2 How long will it take the flare to reach the ground?

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