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How fast must a ball be rolled along the surface of a 70cm high table so that when it rolls off the edge it will strike the floor at the same distance from the point directly below the edge of table?
Wiki User
∙ 12y ago
(ignoring air resistance.)
s = 0.7 metres
take g = 9.82 (m / s) / s
time to fall 0.7 metres, regardless of horizontal velocity,
t = (sq. root (s / (0.5 * g))) = 0.3776 seconds
so constant horizontal velocity required to travel 0.7 metres in 0.3776 seconds
= 0.7 / 0.3776 = 1.854 metres / second
Wiki User
∙ 12y ago
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