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 m it’slead one into thinking that net displacement is in upward direction only.



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