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Plane travels 400 m towards north then 3...

Plane travels 400 m towards north then 300 m towards south and 1200 m vertically upwards, then find resultant displacement ……….

A

1200 m

B

1300 m

C

1400 m

D

1500 m

Text Solution

Verified by Experts

The correct Answer is:
A

`vecr = 400 hatj - 300 hatj + 1200 hatk`
`vecr = 100 hatj + 1200 hatk`
`|vecr | = sqrt ((100) ^(2) + (1200) ^(2))`
`= sqrt ( 10000 + 1440000) `
`r = sqrt (1450000)`
`=1204m`
`therefore r ~~1200 m`
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