A car travels from a city A to city B with speed of 40 km/h and returns back to city A, with the
speed of 50 km/h. What is the average speed of car? What will be its average velocity?
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I don't know properly
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A car travels from city A to city B with a speed of 40 km/h, and it comes back from city B to city A with the speed of 50km/h. What is the time taken by the car to cover the whole distance?
Let the distance from A to B = d km.
Time taken to travel from A to B = d/40 hrs.
Time taken to travel from B to A = d/50 hrs.
Total distance covered = 2d km.
Total time taken = d(40+50)/(40*50) = 9d/20 hrs.
Just substitute d with the actual distance between A and B and you will get the total time of travel. I leave that part to you.
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