A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle, the motion of the particle takes place in a plane. It follows that
Your Option is correct !!
A.
its velocity is constant
B.
its acceleration is constant
C.
its kinetic energy is constant
D.
it moves in a straight line.
As no force is acting in direction of velocity.. there would b no change in magnitude of velocity.
SO
its kinetic energy is constant
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