Q.
In a two block system an initial velocity $v$(with respect to the ground) is given to block $A$. Choose the correct statement.
A) The momentum of block $A$ is not conserved.
B) The momentum of system of blocks $A$ and $B$ is conserved.
C) The increase in momentum of $B$ is equal to the decrease in momentum of block $A$
D) All of the above three statements.
Explanation
(d) Due to presence of contact (frictional) force momenta of blocks $A$ and $B$ separately change but total sum of momenta of $A$ and $B$ taken together is constant because no net external force is acting on the system.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.