Kinematics Question 120
Question: An aeroplane flies 400 m north and 300 m south and then flies 1200 m upwards then net displacement is [AFMC 2004]
Options:
A) 1200 m
B) 1300 m
C) 1400 m
D) 1500 m
Show Answer
Answer:
Correct Answer: A
Solution:
An aeroplane flies 400 m north and 300 m south so the net displacement is 100 m towards north. Then it flies 1200 m upward so $ r=\sqrt{{{(100)}^{2}}+{{(1200)}^{2}}} $
$ =1204m\tilde{-}1200m $ The option should be 1204 m, because this value may lead one into thinking that net displacement is in upward direction only.
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