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Ram has been caught red handed doing notorious activities and is punished to run back and forth in a 20 m long corridor from room number 109 to the other end. Ram starts running from room number 109, touches the other end, returns and toushes the door of room number 109 and so on for 65 minutes continouslyafter which he drops down exhaustd. His speed is seen to be v=sqrt(100-X^(2))m//s where X is the distance (in m) from the centre of the corridor. how many times did he touch the other end during this time interval. (Take:pi3.14) |
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