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A lorry travels 10km northwards, 4km eastwards, 6km southwards, 4km westwards to arrive at a...

Physics
JAMB 1988

A lorry travels 10km northwards, 4km eastwards, 6km southwards, 4km westwards to arrive at a point T. What is the total displacement?

  • A. 6km south
  • B. 4km north
  • C. 6km north
  • D. 4km east
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Correct Answer: Option B
Explanation

Resultant Vertical movement of lorry = 10 - 6 = 4km

Resultant horizontal movement of lorry = 4 - 4 = 0km

Therefore, the total displacement is 4 km north because the final position is directly above the starting point on the y-axis, with no displacement in the x-direction.

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