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17 March, 14:31

It is possible to shoot an arrow at a speed as high as 100 m/s. (a) If friction can be ignored, how high would an arrow launched at this speed rise if shot straight up? (b) How long would the arrow be in the air?

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  1. 17 March, 17:44
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    A) 0 = 100m/s + 2 (-9.8) (x_f-0)

    x_f = 510

    b) 0 = 0 + 100m/s (t) + (1/2) (-9.8) t^ (2)

    Use the quadratic formula

    -200/-9.8 = 20 seconds
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