Momentum and CollisionMedium
Question
Which one of the following is true ?
Options
A.momentum is conserved in all collisions but kinetic energy is conserved in elastic collisions
B.momentum is conserved in all collisions but not kinetic energy
C.both momentum is conserved in all collisions but not kinetic energy
D.neither momentum nor kinetic collisions
Solution
Kinetic energy is not conserved in inelastic collision as some energy is stored as deformation at the point of collision in the form or potential energy.Since no deformation occurs in case of elastic collision so, kinetic energy is conserved in bothelastic and inelastic as in both elastic and external force is applied on them so, nochange in momentum.
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