Question: A body of mass 4 𝑘𝑔 moving with velocity 12 𝑚/𝑠 collides with another body of mass 6 𝑘𝑔 at rest. If two bodies stick together after collision, then the loss of kinetic energy of system is
(A) Zero
(B) 288 𝐽
(C) 172.8 𝐽
(D) 144 𝐽
Answer: Option (C)
Solution:
