Read each statement below carefully and state, with reasons, if it is true or false

cbse
motion-in-plane

#1

Read each statement below carefully and state, with reasons, if it is true or false.
(i) The net acceleration of a particle in circular motion is always along the radius of the circle towards the centre.
(ii) The velocity vector of a particle at a point is always along the tangent to the path of the particle at that point.
(iii) The acceleration vector of a particle in uniform
circular motion averaged over one cycle is a null vector.


#2

(i) False, because the net acceleration of a particle is towards the centre only in case of a uniform circular motion.
(ii) True, because while leaving the circular path, the particle moves tangentially to the circular path.
(iii) True, because the direction of acceleration vector in a uniform circular motion is directed towards the centre of circular path. It is constandy changing with time. The resultant of all these vectors will be a zero vector.