Question

2. 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.​

Answer 1

Answer:

Average speed =  

totaltime

totaldistance

​  

 

The distance covered=30×  

2

1

​  

+25×1+40×2

=120km

Time taken=0.5+1+2=3.5h

Hence,

Average speed=  

3.5

120

​  

=34.286km/h

Explanation:

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