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A particle moves so that its position ve...

A particle moves so that its position vector is given by `vec r= cos omega t hat x = sin omega t haty`, where `omega` is a constant. Which of the following is true?

A

Velocity is perpendicular to `vec r`and acceleration is directed towards the origin.

B

Velocity is perpendicular to`vec r` and acceleration is directed away from the origin.

C

Velocity and acceleration both are perpendicular to `vec r`.

D

Velocity and acceleration both are parallel to `vec r`.

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