1.

A car travels a certain distance with a speed of 50 km/h and returns with a speed of 40km/h. Calculate the average speed for the whole journey.Please explain your answer.

Answer»

ANSWER:

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 8.

Adyasha here



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