What is the average speed of a motorcyclist who covered the first 30 km of his journey in 30 minutes
| December 16, 2020 | education
What is the average speed of a motorcyclist who covered the first 30 km of his journey in 30 minutes, and the second 30 km in 20 minutes?
The average speed Vav is found according to the formula Vav = S / t, where
Vcr-average speed
S-common path
t-total time
We translate minutes into hours
t = 50/60 = 0.83 (h)
S = 30 + 30 = 60 (km)
Vav = 60 / 0.83 = 72.2 (km / h)
Answer: Vav = 72.2 (km / h)
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