The discussion focuses on solving the Golf Ball Problem involving time and speed calculations for a ball rolling off a cliff. The initial speed of the golf ball is 11.2 m/s, and it falls a vertical distance of 15.2 m. The time spent in the air is calculated to be 1.76 seconds using the equation y = Voy t + 1/2 ay t^2. For part (b), the final velocity just before the ball strikes the water requires calculating both horizontal and vertical components of velocity as vectors.
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A golf ball rolls off a horizontal cliff with an initial speed of 11.2 m/s. The ball falls a vertical distance of 15.2 m into a lake below.
(a) How much time does the ball spend in the air?
(b) What is the speed v of the ball just before it strikes the water?