CameraIcon
CameraIcon
SearchIcon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A car travels first 30km at a speed of 40km/hr and next 30km at a speed of 20km/hr. Find the average speed of the car

Open in App
Solution

For first 30km, speed of car is 40km/hr

Then, time taken to travel the first 30 km, t1=distancespeed=3040=0.75hr

For next 30km, speed of car is 20km/hr

Time taken to travel the next 30 km ,t2=distancespeed=3020=1.5hr
Total distance travelled = 30 + 30 = 60 km
Total time taken = 0.75 + 1.5 = 2.25 h


Average speed = Total distance covered / Total time taken

Average speed = 60 km/ 2.25 h
= 26.67 km/h

flag
Suggest Corrections
thumbs-up
3
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Time, Average Speed and Velocity
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon