A car travels first third of distance with a speed of 10kmph,the second third at 20kmph and last third at60kmph.what is it's mean speed over the entire distance?
pratyush4211:
you hd not given speed of first third
sorry.it is 10kmph
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Tell me it's right or wrong then I can explain
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3.v1.v2.v3/v1.v2+v2.v3+v3.v1=3*10*20*60/200+1200+600=30*1200/2000=18kmph.18*5/18=5m/s
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very dirty hand writing unable to understand
so go & take coaching to understand my writing.Lol
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