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A particle is projected with 40ms^(-1) a...

A particle is projected with `40ms^(-1)` at anlge `53^(@)` above horizontal. It speed when it is moving at `37^(@)` with horizontal is

A

`20ms^(-1)`

B

`30ms^(-1)`

C

`10ms^(-1)`

D

`15ms^(-1)`

Text Solution

Verified by Experts

`a_(x)=0`
`rArr 40 cos 53^(@)=V cos 37^(@)`
`40xx(3)/(5)=Vxx(4)/(5)`
`V=30^(-1)`
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