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A man walks 1km due east and then 1km due north. His displacement is

Physics
JAMB 1978
A man walks 1km due east and then 1km due north. His displacement is
  • A. 1 km N15oE
  • B. 1 km N30oE
  • C. \(\sqrt 2\)km N 45oE
  • D. \(\sqrt 2\)km N 60oE
  • E. 2km N 75oE
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Correct Answer: Option C
Explanation
R = \(\sqrt{1^2 + 1^2}\) = \(\sqrt{2km}\)

\(\theta\) = tan-1 \(\frac{(1)}{1}\) = 45oC

= \(\sqrt 2\)km N 45oE
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