Respuesta :
The average speed for the remaining time of the journey is 260 km/h.
What is average speed?
The average speed of any moving object is the ratio of the total distance covered and the total time taken to cover that distance.
Given is a plane took 7 hours to travel 2020 km. For the first 4 hours,
it travelled at an average speed of 310 km/h.
Average Speed S1= distance /time
310 km/h = d/4
d = 1240 km
The remaining distance will be
2020 - 1240 = 780 km
The remaining hours are 7 - 4 =3 h
The average speed for the remaining distance is
Avg speed S2= 780 / 3
S2 = 260 km/h
Thus, the average speed of the car for the remaining is 260 km/h.
Learn more about average speed.
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