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```
a car covers half of the distance with speed 60km/h and rest of distance wiyh 30km/h then the avg. speed will be
a car covers half of the distance with speed 60km/h and rest of distance wiyh 30km/h then the avg. speed will be

```
5 years ago

Shubham Singh
199 Points
```							40 km/hlet t1 and t2 be time of journey with speed 60 and 30 respectivelytotal distance travelled = 60t1 + 30t2and 60t1 = 30t2total time = t1 + t2now u can calculate avg. speed
```
5 years ago
noogler
489 Points
```							avg speed=40kmph use the formula Vavg=2v1v2/v1+v2it is obtained by a vehicle travels half of the distance with speed v1 in time t1and another half with speed v2 in time t2v1=(L/2)/t1 , v2=(L/2)/t2.......................(1)Vavg=total distance/total time=(L/2+L/2)/t1+t2=L/t1+t2substitute t1 and t2 values from (1) in Vavg
```
5 years ago
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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