a car moves with a uniform speed of 30km/h for half an hour 25 kmm/h for next one hour and 40km/h for next two hours find the average speed of car
Answers
Answered by
4
T1= 1/2 hr,. T2= 1hr ,,. T3= 2hr
Distance = Speed× Time
D1 = 30×1/2 = 15km
D2 = 25×1 = 25km
D3 = 40×2 = 80km
Total Distance Travelled = 15+25+80 = 120km
Total Time = 1/2+1+2 = 7/2hr
Average speed= total distance/ total time
Average Speed = 120/ (7/2) = 120×2/7 = 240/7 km/h
Or 34.28 km/h
Distance = Speed× Time
D1 = 30×1/2 = 15km
D2 = 25×1 = 25km
D3 = 40×2 = 80km
Total Distance Travelled = 15+25+80 = 120km
Total Time = 1/2+1+2 = 7/2hr
Average speed= total distance/ total time
Average Speed = 120/ (7/2) = 120×2/7 = 240/7 km/h
Or 34.28 km/h
Similar questions