__A lot of insiders were wondering what new math R&A Chief Executive Peter Dawson was using __when he spoke up about changes to Royal St. George's for this year's British Open, which starts Thursday.
A boy kicks a ball horizontally over the edge of a cliff with a speed of \(6ms^{-1}\) as shown in the diagram. The ball hits the surface of the water \(3s\) later. (a) Calculate the vertical speed of ...
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