Physics, asked by DKumar12345, 9 months ago

solve by process fastly​

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Answers

Answered by ghanashammvsep19
0

Answer:

4 m/s

Explanation:

vavg =2v1v2/v1+v2

Answered by kartavyasachan4000
2

Answer:

average speed=3+7.5+4.5/3=5m/sec

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