A terrorist ‘A’ is walking at a constant speed of `7.5 km//hr` due West. At time `t = 0`, he was exactly South of an army camp at a distance of 1 km. At this instant a large number of army men scattered in every possible direction from their camp in search of the terrorist. Each army person walked in a straight line at a constant speed of `6 km//hr`.
(a) What will be the closest distance of an army person from the terrorist in this search operation?
(b) At what time will the terrorist get nearest to an army person?
