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A body is projected horizontally from a ...

A body is projected horizontally from a height of `78.4 m` with a velocity `10 ms^(-1)`.Its velocity after `3 seconds` is `(g=10 m//s^(2))` (Take direction of projection as `i` and vertically upward direction as `j`)

A

`10hati-30hatj`

B

`10hati+30hatj`

C

`20hati-30hatj`

D

`10hati-10sqrt3hatj`

Text Solution

Verified by Experts

The correct Answer is:
A
`V_(x)=U , V_(y)=-"gt"`
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