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KCET2019PhysicsCenter of Mass, Momentum and Collision

During inelastic collision between two objects, which of the following quantity always remains conserved?

Options

  1. ATotal linear momentum
  2. BTotal kinetic energy
  3. CSpeed of each body
  4. DTotal mechanical energy

Correct answer

A. Total linear momentum

Step-by-step solution

Since no external forces are acting on the colliding bodies during collision, thus total linear momentum is always conserved in all type of collisions but kinetic energy in not conserved in all collisions. Kinetic energy is conserved in perfectly elastic collision only but some kinetic energy is lost in inelastic collisions. So, total kinetic energy is not conserved in inelastic collision.

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