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Q1 A car travels first 30 km with a uniform speed of 60kmh and the next 30 km with auniform speed of 40 km h . Calculate (i) the total time of journey,(ü) the average speed of car.[Ans(i) 75 min(ii) 48 km/h)pls.............answer |
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Answer» v1=60km/h d2=30km v2=40 km /h t=(d1/v1)+(d2/v2) t=(30/60)+(30/40) t=30/24 t=30*60/24 t=75 |
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