wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

A truck driver drives 20 km down the road in 5 minutes . He then reverses and drive 12 km back down the road in 3 minutes. What is the average velocity?

A
1 km/min
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
2 km/min
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
3 km/min
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
4 km/min
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct option is A 1 km/min
The truck motion can be represented as shown below.
Let truck starts from A and reaches B which is 20 km far and then reverse back to reach C by driving 12 km.
So, net displacement of the truck is ΔS=AC=2012=8 km
And, total time taken Δt=5+3=8 min
So, average velocity is given as
vavg=St=88=1 km/min

flag
Suggest Corrections
thumbs-up
5
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Speed and Velocity
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon