Question

An aeroplane moves 400 m towards north, 300 m towards
west and then 1200 m vertically upwards. Then its
displacement from the initial position is
(a) 1300 m
(b) 1400 m
(c) 1500 m
(d) 1600 m​

Answer 1

Answer:

Displacement of initial position is 1300.

Answer 2

Answer:

Here,

OA = 400 m

AB = 300 m

BC = 1200 m

Now,

OB^2 = OA^2 + AB^2

And,

OC^2 = OB^2 + BC^2 = OA^2 + AB^2 + BC^2 = 160000 + 90000 + 1440000

=> OC = 1300 m

This is the magnitude of the displacement of the plane.

Explanation:

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