The first half of the journey, the car drove at a speed of 80 km / h, the second half of the journey at a speed
| March 3, 2021 | education
The first half of the journey, the car drove at a speed of 80 km / h, the second half of the journey at a speed of 60 km / h. Determine the average speed of the car for the entire time of movement.
Since the path is divided into two equal parts, the average speed can be calculated as the arithmetic average of the vehicle speeds in each of them.
(80 + 60): 2 = 140: 2 = 70 km / h.
Answer: the average speed is 70 km / h.
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