This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Injuries by Firearms, Subject name: Forensic Medicine
Destructive power of bullet is determined by? 
Select and explain. 
A. Weight of bullet, B. Shape of bullet, C. Size of bullet, D. Velocity of bullet
D: Velocity of bullet
Answer: D: Velocity of bullet 
Explanation: Ans. is 'd' i.e., Velocity of bullet > 'a' i.e., Weight of bullet o Tissue damage (or destructive power of bullet) is dependent on striking (kinetic) energy of bullet, which is proportional to its mass and square of velocity (KE = 1/2 mv2). So modem bullets are designed to have smaller mass allowing transportation of large amount of ammunition and high velocity, as velocity is more important determinant in destructive power of bullet.