Mechanical Engineering - Engineering Mechanics - Discussion
Discussion Forum : Engineering Mechanics - Section 4 (Q.No. 28)
28.
A body of mass m moving with a constant velocity v strikes another body of same mass m moving with same velocity but in opposite direction. The common velocity of both the bodies after collision is
Discussion:
21 comments Page 2 of 3.
Sonu pandey said:
8 years ago
Here opposite direction. So,
v-(-v) = 2v.
v-(-v) = 2v.
BIBIN EMMANUVEL said:
8 years ago
Velocity after collision is 0.
Ajaypal said:
8 years ago
I think question is about COMMON RELATIVE VELOCITY of both masses with respect to each other which is equal to 2v.
(1)
Dhruv said:
8 years ago
If it is possible after collision velocity will be twice then just we need to create continuous collision arrangement and we will have infinite Energy. Because if Velocity twice means after every collision energy increase by 4 times. That's why practically it is not possible.
Pradeep gk said:
8 years ago
You are correct @Tanveer.
Abhishek samriwal said:
7 years ago
If the body will move in opposite direction a negative sign would be there.
We know that Common velocity = V1 - V2.
Here both the velocities are same.
Therefore Common velocity = V - (-V).
= V + V = 2V.
We know that Common velocity = V1 - V2.
Here both the velocities are same.
Therefore Common velocity = V - (-V).
= V + V = 2V.
Abhishek samriwal said:
7 years ago
Common velocity means relative velocity since both the object will have same velocity V after collision the common or relative velocity wrt one another will be double 2v.
Darshan said:
7 years ago
If body will move with double velocity after impact than after sometime it's velocity will be infinite.
Omid said:
6 years ago
They are asking combined velocity. So 2V.
Vinay BEL said:
5 years ago
Velocity after collision is 0.
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers