Physics, asked by farzanfarooq7356, 1 year ago

A train covers four successive three km stretches at speeds of 10 km/hr, 20km/hr, 30 km/hr and 60 km/hr respectively. its average speed over this distanceis:

Answers

Answered by rashi260
0
30 km/hr 10+20+30+60 by 4
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