The car drove 30 km at an average speed of 15 m / s. Then he covered 40 km in 1 hour.
| December 29, 2020 | education
The car drove 30 km at an average speed of 15 m / s. Then he covered 40 km in 1 hour. What was the average speed of the car along the way?
The full path of the car is S1 + S2 = 30 + 40 = 70km
t in the first section = 30000/15 = 2000sec
t2 = 3600sec
Vav = All the way / all the time = 70000/5600 = 12.5 m / s
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