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9. A car travels a certain distance at a speed of 50 km/h and returns at a speed of 40 km/h. Calculate the average speed for the whole journey. plz ans this question |
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Answer» YOU SHOULD 2 OPTIONS 1. IN PIC 2.average speed-here the distances are equal,we have the formula of FINDING average speed when distance is equal as V1*V2/V1+V2. if we substitute the values here we get 50*40/50+40 which gives 200/90=20/9 kmph which when converted into m/s gives 8PLEASE MARK ME AS BRAINLIESTREMEMBER TO THIS EQUATIONS IN PARTICIPATORY AND VERY CAREFULLY |
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