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

A ball is moving with speed of 6 m/s on horizontal surface falls in a vertical trench 4 m wide and 20 m deep. All collisions are elastic then [g=10m/s2]

A
Ball will come out of trench at A
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
B
Ball will come out of trench at B
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
Ball will hit wall B 3 time before coming out
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
D
Ball will hit wall A 4 time before coming out
No worries! We‘ve got your back. Try BYJU‘S free classes today!
Open in App
Solution

The correct options are
A Ball will come out of trench at A
C Ball will hit wall B 3 time before coming out
As collision is elastic horizontal velocity is always 6 m/s.

Time of fall in trench 20=12×10×t2
t = 2 sec
So total time taken by the ball to come back is 4 sec.

Horizontal distance covered in 4 sec is d=6×4=24m.
It will hit B 3 times and A 2 times before coming at A top.

flag
Suggest Corrections
thumbs-up
1
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Realistic Collisions
PHYSICS
Watch in App
Join BYJU'S Learning Program
CrossIcon