A car moves with a speed of 30 km/h–1 for half an hour, 25 km/h–1 for one hour and 40 km/h–1 for two hours. Calculate the average speed of the car.
Answers
Answered by
5
Distance = Speed*Time
1st Case = 30*1/2 = 15km
2nd Case = 25*1 = 25km
3rd case = 40*2 = 80km
Total Distance Travelled = 15+25+80 = 120km
Total Time = 1/2+1+2 = 7/2
Average Speed = 120/ 7/2 = 120*2/7 = 240/7 km/h
Or 34.28 km/h
1st Case = 30*1/2 = 15km
2nd Case = 25*1 = 25km
3rd case = 40*2 = 80km
Total Distance Travelled = 15+25+80 = 120km
Total Time = 1/2+1+2 = 7/2
Average Speed = 120/ 7/2 = 120*2/7 = 240/7 km/h
Or 34.28 km/h
Answered by
0
Answer:
As we know that
average speed = total distance covered / total time taken
here, total speed is 30+25km/hr = 55 * 5/18 m/s
total time = 90 mins
so,average time = 15.27 / 90
=0.696
Explanation:
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