Question

ANSWER THE QUESTION.

A body travels a straight line covers 1/3rd of the distance with a speed of 4m/s the remaining distance is covered for half the time with 2m/s and again 1/2 the time with a speed 6m/s. Find the average speed over the entire journey.​

Answer 1

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ANSWER REFER TO THE ATTACHMENT PROVIDED.

Answer 2

Let total distance 's'

Let time coverd for first one third distance be t1

then t1=s/34=s12

t2 be time for next two journeys

2s3=2t2+6t2=8t2

t2=s12

averagevelocity=TotaldistaneTotaltime

=st1+2t2

=ss12+2s12

=4m/s

Hope thse helps u to understand my ans