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Question

A body travels a distance of 3 km towards East, then 4 km towards North and finally 9 km towards East.
(i) What is the total distance travelled?
(ii) What is the resultant displacement?

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Solution

(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
=122+42=144+16=160=12.6km

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