A) its velocity is constant
B) its acceleration is constant
C) its kinetic energy is constant
D) it moves in a straight line
Correct Answer: C
Solution :
When a force of constant magnitude acts on velocity of particle perpendicularly, then there is no change in the kinetic energy of particle. Hence kinetic energy remains constant. The velocity of particle may be constant or not depending upon the path whether it is straight or curved. But the speed is always constant.
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