An army of ants walk on a horizontal pole of length l cm,each with a constant speed of 1 cm/s.When a walking ant reaches an end of the pole,it immediatelly falls off it.When two ants meet they turn back and start walking in opposite directions.We kno
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![An army of ants walk on a horizontal pole of length l cm,each with a constant speed of 1 cm/s.When a walking ant reaches an end of the pole,it immediatelly falls off it.When two ants meet they turn back and start walking in opposite directions.We kno](/uploads/image/z/11630697-33-7.jpg?t=An+army+of+ants+walk+on+a+horizontal+pole+of+length+l+cm%2Ceach+with+a+constant+speed+of+1+cm%2Fs.When+a+walking+ant+reaches+an+end+of+the+pole%2Cit+immediatelly+falls+off+it.When+two+ants+meet+they+turn+back+and+start+walking+in+opposite+directions.We+kno)
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