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(i) A bus is beginning to move with acce...

(i) A bus is beginning to move with acceleration of 1 ft per sec. Show that a man who can run 9 ft. per sec will catch the bus in 8 sec if he is 40 ft. behind when it starts and the bus will in turn catch him after two seconds more.
(ii) If the man is `40(1)/(2)` ft. behind, he will only just catch the bus.
(iii) And if he is 50 ft. behind, he will never catch the bus, the shortest distance between them being 9 ft.

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