1. The problem statement, all variables and given/known data A 1 gm rifle bullet takes 0.5 seconds to reach the target.Regarding the bullet as a point mass, and neglecting the air resistance and the mottion of the earth,find the order of magnitude of the spread of successive shots at the target with optimum condition for aiming and firing. 2. Relevant equations 3. The attempt at a solution I cannot understand what I am to find out in this problem.This problem appears in QM book of Schiff and possibly,it is a problem of uncertainty principle. The book has no answer list at the back for which I am confused...whether to find the time interval or something else... What is meant by: "the spread of successive shots"? Can anyone please tell?