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 1 of 3.
Shivam said:
4 years ago
Since, nothing is provided, we assume completely elastic collision (bodies don't stick and move together). In this case, after collision both the bodies will move in opposite directions with the same velocity (v). Hence, common velocity (relative velocity of one with respect to other) will be 2v.
Hence, the answer B is correct.
Hence, the answer B is correct.
(1)
Vinay BEL said:
5 years ago
Velocity after collision is 0.
Omid said:
6 years ago
They are asking combined velocity. So 2V.
Darshan said:
7 years ago
If body will move with double velocity after impact than after sometime it's velocity will be infinite.
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.
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.
Pradeep gk said:
8 years ago
You are correct @Tanveer.
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.
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)
BIBIN EMMANUVEL said:
8 years ago
Velocity after collision is 0.
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