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A particle is moving with a position vec...

A particle is moving with a position vector, `vec(r)=[a_(0) sin (2pi t) hat(i)+a_(0) cos (2pi t) hat(j)]`. Then -

A

Magnitude of displacement of the particle between time `t=4` sec and `t=6` sec is zero

B

Distance travelled by the particle in 1 sec is `2pia_(0)`

C

The speed of particle in the whole motion is constant and equal to `2pia_(0)`.

D

none of these

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A, B, C
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