A motorcyclist halfway traveled at a speed of 100 km / h and the rest of the way
| September 2, 2021 | education
A motorcyclist halfway traveled at a speed of 100 km / h and the rest of the way at a speed of 50 km / h, which was the average speed of a motorcyclist.
Task data: V1 (speed of a given motorcyclist in the first half of the journey) = 100 km / h; V2 (speed on the remaining path) = 50 km / h.
Let us derive a calculation formula for the average speed of a given motorcyclist: V = S / (t1 + t2) = S / (S / 2V1 + S / 2V2) = 1 / (1 / 2V1 + 1 / 2V2).
Calculation: V = 1 / (1 / (2 * 100) + 1 / (2 * 50)) = 1 / 0.015 = 66.67 km / h.
Answer: The average speed for a given rider was 66.67 km / h.
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