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total distance taken= 7+2= 9km
total time taken= 2+1=3hrs
av.speed= total distance/ total time
=9/3 =3km/hr
av. velocity = total displacement / total time
(displacement will be same as distance)
= 9/3=3km/hr
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hope this helps
wendyyy:
avg. speed?
already taken in the first part below the formula..
of average speed
oh all right.... thanks:)
welcome...
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