Question
Physics Question on work, energy and power
For inelastic collision between two spherical rigid bodies
A
the total kinetic energy is conserved
B
the linear momentum is not conserved
C
the total mechanical energy is not conserved
D
the linear momentum is conserved
Answer
the linear momentum is conserved
Explanation
Solution
In an inelastic collision, the particles do not regain their shape and size completely after collision. Some fraction of mechanical energy is retained by the colliding particles in the form of deformation potential energy. Thus, the kinetic energy of particles no longer remains conserved. However, in the absence of external forces, law of conservation of linear momentum still holds good.