A boy starts at point O, walks 60m due north, then turns right and walks 80m due east to reach point A.
(i) Calculate the total distance covered by the boy.
(ii) Using an appropriate geometrical method, find the magnitude of the boy’s resultant displacement OA.
(iii) State the direction of the displacement with respect to the east–west line.
(iv) Compare the numerical values obtained in parts (i) and (ii), and state which quantity is scalar and which is vector.