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8. A ball on the ground is shot straight up and it reaches a maximum height of 25 m/s. (a) What was the ball's initial velocity? (b) After reaching its maximum height, how long will the ball take before it lands again? (c) What is the ball's speed just before it hits the ground? 9. A ball is dropped from a window and hits the ground with a speed of 25 ft/s. How high above the ground is the window? 10. A ball is thrown upward at an angle of 30o from the horizontal. What are the values of the horizontal and vertical components of its velocity? 1 1. A stream of water gushes from an open pipe at an angle of 150 from the horizontal. If water comes out of the pipe at a speed of 15 m/s, how far from the pipe will the water land