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A stone is projected vertically upwards with velocity 40 m/s. Show that the stone will reach the point of projection with the
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u = 0 s = 88.5 m a = 9.8 m/s^2 s = ut + 1/2 at^2 88.5 = o + 1/2 9.8 * t^2 = 4.9 * t^2 t^2 = 88.5 / 4.9 = 18.06 t = 4.25 Horizonal displacement = vt = 4.8 * 4.5 =21.6 m
