On a cliff of length 110m at a height 240m, 10 cats are positioned facing either the left or right direction arbitrarily. The length of the cliff is large compared to the size of each cat. Initially, all cats start running in the direction they are
facing at a speed 12 m/sec. Whenever any cat collides with another cat, both the cats instantly reverse their respective directions and continue running. When a cat reaches the ends of the cliff, it falls down.
how much time does it take for all 10 cats to fall off the cliff?
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