Question

A girl school to her relatives place from home she walks 2 kilometre East and then 1 kilometre towards north east what is the displacement when she reaches her destination

Answer 1

Answer:√5

Explanation:

We know that displacement is that displacement is the shortest path covered by the body. As it is making a right angle triangle with sides 2kilometre as base and 1 kilometre as height whereas the displacement asked is the hypotenuse.

So by Pythagoras theorem,

(Displacement )^2 = base^2 +height^2

Displacement =√1+4

=√5

hence the displacement is√5km.