Answers

2015-06-08T09:46:30+05:30
the total distance covered by a body is 30 m.it covered 15 metres while going up and it again covered the same distance while coming down.so its distance will be 30 m in total but as it is reaching its initial position , it's displacement will be 0.
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2015-06-09T10:29:37+05:30
Since the distance covered while going up is 15 and coming down is 15 thus distance covered is 15*2=30m
and since there is no distance between initial and final position as it comes back to the initial position the displacement is 0
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