Discussion Forum



1)

The principle of conservation of linear momentum can be strictly applied during a collision between two particles provided the time of impact.


A) is extremely small

B) is moderately small

C) is extremely large

D) depends on particular case

Answer:

Option A

Explanation:

In physics, collision does not means that one particle strikes another particle. In fact, two particles may not even touch each other & may still say to be colliding. The necessary requirements of collision are

  • A large force for a relatively short time (i.e., an impulse) acts on each colliding particle.
  • The motion of the particles (at least one of the particle) is changed abruptly.
  • The total momentum (as also the total energy) of particles remains conserved.