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A particle is acted upon by a force of c...

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

A

It's velocity is constant

B

It's acceleration is constant

C

It's kinetic energy is constant

D

It moves in a straight line

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The correct Answer is:
C
What a force of constant magnatude which is perpendicular to the velocity of partical , work done is zero and hence charge in kinetic energy is zero.
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Knowledge Check

  • A particle is acted upen by the a force of constant magninude which is always perpendicalar to the velocity of the particle . The motion of the particle taken place is a plane it follows that :

    A
    its velocity is constant
    B
    its acceleration is constant
    C
    its Kinectic energy is constant
    D
    its move is a circular path

  • A particle is acted upon by constant magnitude force perpendicular to ot which is always perpendicular to velocity of particle. The motion is taking place in a plane it follows that :

    A
    Velocity is constant
    B
    acceleration is constant
    C
    kinetic energy is constant
    D
    it moves in circular path

  • When the force of constant magnitude always act perpendicular to the motion of a particle then :

    A
    Velocity is constant
    B
    Acceleration is constant
    C
    K.E. is constant
    D
    None of these
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