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An aeroplane moves 400m towards north, 3...

An aeroplane moves `400m` towards north, `300m` towards west and then `1200m` vertically upward. Then its displacement from the initial position is

A

1.3 km

B

1.4 km

C

1.5 km

D

zero

Text Solution

Verified by Experts

The correct Answer is:
A
Displacement =`sqrt((400)^(2)+(300)^(2)+(1200)^(2))`
`= 10^(2)xxsqrt(16+9+144)`
`10^(2)xx13m`
=1.3 Km
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