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 :

Options

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

Answer

C, D

Explanation

(c,d) When the force is perpendicular to the velocity and constant is constant in magnitube then the force acts as a centripetal force , and the body move in a circule path . The force is constant in magnitub , this show the speed is not changing and hence kinetic energy will remain constant