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The position co-ordinates of a particle ...

The position co-ordinates of a particle moving in a 3-D coordinate system is given
by `x = a" cos"wt`
`y = a" sin"wt `
and `z=awt`
The speed of the particle is :

A

`sqrt(2) aw`

B

`aw`

C

`sqrt(3)aw`

D

`2aw`

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