SSC
PHYSICS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The total momentum before a collision is equal to the total momentum after a collision.
|
|
|
The total momentum before a collision is greater than the total momentum after a collision.
|
|
|
The total momentum before a collision is less than the total momentum after a collision.
|
|
|
The total momentum before a collision is not related to the total momentum after a collision.
|
Detailed explanation-1: -Law of conservation of momentum: The law states, in absence of external forces the momentum of the system is conserved . It means that the total momentum before the collision is equal to the total momentum after the collision.
Detailed explanation-2: -In collisions, it is assumed that the colliding objects interact for such a short time, that the impulse due to external forces is negligible. Thus the total momentum of the system just before the collision is the same as the total momentum just after the collision.
Detailed explanation-3: -Conservation of Linear Momentum Formula The principle of conservation of momentum states that if two objects collide, then the total momentum before and after the collision will be the same if there is no external force acting on the colliding objects.