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A particle is projected from ground with...

A particle is projected from ground with speed 80 m/s at an angle `30^(@)` with horizontal from ground. The magnitude of average velocity of particle in time interval t = 2 s to t = 6 s is [Take g = 10 `m//s^(2)] `

A

`40sqrt2m//s`

B

`40m//s`

C

zero

D

`40sqrt3m//s`

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The correct Answer is:
D
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