Answers

2015-04-20T11:07:12+05:30
Td1= First half distance
Td2=Second half distance

Td1 = 3m/s

Td2(1) = 4.5m/s
Td2(2) = 7.5m/s

Td2 Average = (4.5+7.5)/2=6m/s

Total average =(3+6)/2= 4.5 m/s
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