Question

A body travels a distance of 3 km towards East, then 4 km towards North and finally 9 km towards East.
1. what is the total distance travelled?
2. what is the resultant displacement?​

Answer 1

Answer:

(i) Total distance travelled =3+4+9=16 km

(ii) The body travels a total distance of 12 km in east direction i.e. towards x-axis.

And it travels a distance of 4 km in North direction, i.e. towards y-axis.

Hence, resultant displacement is

=

$\sqrt{12 {}^{2} { + 4}^{2} } = \sqrt{144 + 16 = \sqrt{160 = 12.6} }$