Using 2nd equation of motion,
S = ut + 0.5 at^2
29.1 = 8.45t + 0.5 x 9.8 x t^2
4.9t^2 + 8.45t - 29.1 = 0
Time, t = 1.72 sec
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A ball is thrown directly downward with an initial speed of 8.45 m/s, from a height...
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