A hose pipe lying on the ground shoots a stream of water upward at an angle 600 to the horizontal at a speed of 20 ms-1. The water strikes a wall 20 m away at a height of
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A hose pipe lying on the ground shoots a stream of water upward at an angle 600 to the horizontal at a speed of 20 ms-1. The water strikes a wall 20 m away at a height of