Perpendicular is the shortest distance

Classical Mechanics Level 5

Deepanshu and Mvs Saketh are moving along 2 long straight lines, in same plane , with same speed = \(20 ~ cm/s\) . The angle between the 2 lines is \(60^{\circ}\) , and their intersection point is O. At a certain moment, Deepanshu and Mvs Saketh are located at distances 3m and 4m from O , and are moving towards O . Find the shortest distance between them in centimetres.

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