A car moves 30km/h for half an hour 25km/h for 1hour and 40km/h for 2hours.calculate average speed of the car
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heya............
Distance covered in half an hour at 30km/hr = s×t = 30×1/2=15km.
Distance coveted in 1hr at 25km/hr= s×t= 25×1 =25km.
Distance covered in 2 hrs at 40km/hr=s×t= 40×2=80km
Therefore, total distance covered= 15+25+80=120km
Total time taken= 3hrs and 30 mins=7/2 hrs.
Therefore,
average speed=total distance covered/total time taken = 120×2/7 = 34.28km/hr
tysm..........@kundan
Distance covered in half an hour at 30km/hr = s×t = 30×1/2=15km.
Distance coveted in 1hr at 25km/hr= s×t= 25×1 =25km.
Distance covered in 2 hrs at 40km/hr=s×t= 40×2=80km
Therefore, total distance covered= 15+25+80=120km
Total time taken= 3hrs and 30 mins=7/2 hrs.
Therefore,
average speed=total distance covered/total time taken = 120×2/7 = 34.28km/hr
tysm..........@kundan
dashjyot:
Thanks
You birth place was
???
Oooh
Can i ask u one more question
Of physics
What do u mean by an acceleration of 5m/s
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