Q. An aeroplane flies 400m north and 300m south and then flies 1200m upwards, then net displacement is
A) 1500m
B) 1400m
C) 1300m
D) 1200m
Explanation
(d) An aeroplane flies 400m north and 300m south so the net displacement is 100m towards north.
Then it flies 1200m upward so $r = \sqrt{(100)^{2} + (1200)^{2}}$
$= 1204\ m\ \simeq 1200\ m$
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.