A boy walks 10 km east in 2 hrs and then 2.5 km west in 1 hr. Calculate the average
velocity of the boy
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Answer: 2.5
Explanation:
Distance = 10km
time = 2 hr
Distiance = 2.5
time = 1 hr
average velocity = Total distance/ Total Time
Total distance = 10 - 2.5 = 7.5
total time = 1+2
7.5 / 3
2.5
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