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. then
A
its velocity is constant
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B
its acceleration is constant
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C
its kinetic energy is constant
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D
it moves in a straight line
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Solution
The correct option is A its velocity is constant In circular motion where →a⊥→v ∴ speed is constant for uniform circular motion