A man walks 7km east in 2 hours and then 2.5km west in 1 hour
What is the man average speed for the whole journey ?
What is the man average velocity for the whole journey?
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a).average speed = distance / time = 7 km + 2.5 km/2 +1=3.2 km /hr
b).average velocity=displacement / time=7km -2.5km / 2+1=1.5km / hr
b).average velocity=displacement / time=7km -2.5km / 2+1=1.5km / hr
lovingheart32:
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