Question

8. A particle moves so that its position vector is given
by r = cos ot û + sinot ý, where o is a constant.
Which of the following is true? [NEET-2016]
(1) Velocity is perpendicular to r and acceleration
is directed away from the origin
(2) Velocity and acceleration both are
perpendicular to r
(3) Velocity and acceleration both are parallel tor
(A) Velocity is perpendicular to r and acceleration
is directed towards the origin
​

Answer 1

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