A person standing at the top of a hemispherical rock ofradius R kicks a ball (initially
Chapter 4, Problem 84(choose chapter or problem)
A person standing at the top of a hemispherical rock ofradius R kicks a ball (initially at rest on the top of therock) to give it horizontal velocity vSi as shown in FigureP4.84. (a) What must be its minimum initial speed if the ball is never to hit the rock after it is kicked?(b) With this initial speed, how far from the base of therock does the ball hit the ground?
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