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steve Alexander

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s=-4.9t²+245t+14.7s=-4.9(t²-245/4.9t)+14.7 s=-4.9(t²-50t)+14.7 s=-4.9(t²-50+625-625)+14.7
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an object is fired upward at the end of the burn it has an upward velocity of 245m/s and is 14.7 m higha) find the maximum
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i just want to know form where i got on this formula the 4.9t² on this formula s=4.9t²+Vot+h because the book only say that a
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