A boy has to go 500 m due north, 400 m due east and 200 m due south to reach his school. Hetakes 20 minutes to reach the school. average velocity of boy during the walk is X/12 m/s . find the value of x
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Average velocity = Total Displacement/ Total Time
Total Displacement = 500m
Total Time = 20 min = 20*60 = 1200s
Therefore,
Avg Vel = 500/1200
x/12 = 5/12
x = 5
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