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Question

A person travels a distance of 5 m towards East, then 4 m towards North and then 2 m towards West.
(i) Calculate the total distance travelled.
(ii) Calculate the net displacement. [2 MARKS]

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Solution

Finding Distance: 1 Mark
Finding Displacement: 1 Mark

(i) Total distance travelled by the person = 5 m+4 m+2 m = 11 m

(ii) To calculate the resultant displacement, we choose a convenient scale, where 1 cm represents 1 m. We draw a 5 cm long line AB towards east and then 4 cm long line BC towards north. Finally, a 2 cm long line CD towards west. The resultant displacement is calculated by joining the initial position A to the final position D.

Net displacement AD = (32+42)=5 m

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