Question

9.
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 :-
(1) its velocity is constant
(2) its K.E. is constant
(3) its acceleration is constant
(4) it moves in a straight line​

Answer 1

Answer:

I think the answer is 1 or 4

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