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3. A toy rocket is launched from a 2.1 m high platfom in such a way that its height, h (in meters) after t seconds
3. A toy rocket is launched from a 2.1 m high platfom in such a way that its height, h (in meters) after t seconds is given by the equation h = -4.9t2+ 14.0t + 2.1
How long will it take for the rocket to hit the ground? (seconds, round to the nearest hundreth)
4. A ball is thrown upward with an initial velocity of 64 ft/s from a height of 720 ft. h = -16t2+ 64t + 720
After how many seconds will the ball reach the ground? (i.e. for what positive value of t is h = 0?)
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