Q. A bullet hits and gets embedded in a solid block resting on a frictionless surface .In this process which one of the following is correct?
A) Only momentum is conserved
B) Only kinetic energy is conserved
C) Neither momentum nor kinetic energy is conserved
D) Both momentum and kinetic energy are conserved
Explanation
(a) Initial KE of the system is zero, as both bullet and solid block are at rest .Final KE of the system increases.
Hence, in this process only momentum is conserved.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.