A car moves at a constant speed of 60 kmh-1 for 1 km and 40 kmh-1 for next 1 km. What is the average speed of the car?
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For this question , the formula 2v1v2 / v1 + v2 will be used
v1 = 60 km/h
v2 = 40 km/h
By substituting the values ,
= 2×60×40 / 60 + 40
= 4800 / 100
= 48 km/h
For the derivation of 2v1v2 / v1 + v2 , check out the following link -
https://brainly.in/question/5940458
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