18-03-2018
Physics

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I need help with 3 and 4

I need help with 3 and 4 class=

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anishakumari240 anishakumari240

18-03-2018

speed = distance /time
s1=68/2=34
s2=3/1=3
s3=25/1=25
average speed=s1+s2+s3=62/3=20.66

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