Question

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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Answer 1

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A car travels 40 kilometers at an average speed of 80 km/h and then travels 40 kilometers at an average speed of 40 km/h. What is the average speed of the car for this 80 km trip?

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23 Answers

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Rajkumar Singh

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Answered 3 years ago

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.

Step-by-step explanation:

Hope it may help you..