Question

A boy travels 3km north and 4km east .What will be the (1) distance travelled by him (2) minimum distance or displacement to go to get back to where he started(3) direction of displacement

Answer 1

He travelled 3km North and 4km East, Then ,
(1) Total Distance traveled = 3+4 = 7km,
(2)Minimum Distance or Displacement = Join the starting point and ending point you will get a traingle of Right angled, Calculate Hypotenuse, which is the shortest distance,

=> Root of (3^2+4^2) = 5
=> Shortest Distance or Minimum Distance = 5km,
(3) Direction of Displacement To go to Final point is North East,
Direction of Displacement to go to Initial Point is South West !

Hope you understand,

Have a Great day !