An object travels a distance of 40km with avg speed of 80km/h and then next 40km with avg speed of 40km/h. Find the avg speed with the total distance..
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Explanation:
An object travels a distance of 40km with avg speed of 80km/h and then next 40km with avg speed of 40km/h. Find the avg speed with the total distance.
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Hello,
The general method of finding average speed (not velocity) is just divide total distance travelled by total time taken.
Mathematically,
Av. Speed = (total distance travelled÷total time taken)
Now coming to this question,
Time taken in first 40km=(40÷80) =1/2 hour
Time taken to travel next 40km=(40÷40) =1 hour
Now total time taken to travel 80km= 1/2+1 = 1.5hours,
According to formula mentioned above,
Av. Speed = 80/1.5 = 53.33km/h.
Hope that it is clear.
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