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A drunkard walking in a narrow lane take...

A drunkard walking in a narrow lane takes 5 steps forward and 3 steps backward, followed again by 5 steps forward and 3 steps backward, and so on. Each step is `1m` long and requires 1s. Plot the x-t graph of his motion. Determine graphically or otherwise how long the drunkard takes to fall in a pit 9 m away from the start.

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x-t grapth from graph time taken=21s
OR `(5m-3m)+(5m-3m)+5m=9mrArr "total steps"=21 rArr "time"=21s`
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