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A motorist travels first part of a trip at an average speed of 35 km/h and covers an equal distance in the second part. If he has completed his trip at an average speed of 21 km/h then his average speed in the second half is  ------- km/h​

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onyebuchinnaji

The average speed of the motorist in the second half of the journey is determined as 7 km/h.

What is average speed?

The average speed of an object is the ratio of total distance to total time of motion.

  • Let his average speed in the second half = x

21 = (35 + x) / 2

35 + x = 42

x = 42 - 35

x = 7 km/h

Thus, the average speed of the motorist in the second half of the journey is determined as 7 km/h.

Learn more about average speed here: https://brainly.com/question/6504879

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