Answer to Question #17770 in Mechanics | Relativity for uzma

Question

if a man leaves his front door walks 140 meter east 2100 meter north and then takes a penny from his pocket and drops it from a cliff 48 meter high. In a co ordinate system in which the positive x, y and z axes points east, north and up and origin being at the location of penny as the man leaves his front door. what will be the expression using unit vector for the displacement of penny.