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`        A car travel up a hill at a constant speed of 40km/h and returns down the hill at constant speed of 60km/h.Calculate the average speed for the round trip`
2 months ago

## Answers : (2)

Arun
23523 Points
```							Let the distance = d so, total distance = 2dIn first stretch, distance = dspeed = 40 km/htime = distance/speed= d/40 hrsOn second stretch,distance = dspeed = 60 km/ htime =distance /speed = d/60 hrs total time = d/40 + d / 60= 3d+ 2d / 120= 5d/ 120 = d/24average speed = total distance /total time = 2d / d / 24= 2d × 24/d= 2×24 = 48 km/h
```
2 months ago
Vikas TU
10078 Points
```							Dear student Please ollow the below link https://www.askiitians.com/forums/Mechanics/a-car-travels-up-a-hill-at-the-constant-speed-of-4_117352.htmGood Luck
```
2 months ago
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### Course Features

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### Course Features

• 110 Video Lectures
• Revision Notes
• Test paper with Video Solution
• Mind Map
• Study Planner
• NCERT Solutions
• Discussion Forum
• Previous Year Exam Questions