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A body is projected with velocity `60m//s` at `30^(@)` to the horizontal.The velocity of the body after `3 seconds` is

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A body is projected with velocity `60m//s` at `30^(@)` to the horizontal.The velocity of the body after `3 seconds` is
A. `20hati+20sqrt3 hatj`
B. `30hati`
C. `10sqrt3hatj`
D. `30sqrt3hati`
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1 Answer

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Correct Answer - D
`V=u cos thetai+(u sin theta-"gt")j`
`Tantheta=(4H)/R`
`R=H_(max)`
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