Q. If the kinetic energy of a body becomes four times of its initial value, then new momentum will
A) Becomes twice its initial value
B) Become three times its initial value
C) Become four times its initial value
D) Remains constant
Explanation
(a) $P = \sqrt{2mE}\ \therefore P \propto \sqrt{E}$ $i.e$., if kinetic energy becomes four times then new momentum will become twice
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.