Question

Which one of the following is a null vector
1) Net displacement of a particle moving once
around a circle
2) Velocity of a body Poojected verticallyup
3)acceleration of a porticle executing S.H.M
at the moon position
4] all the aabove​

Answer 1

Explanation:

The net acceleration of a particle in circular motion is always along the radius of the circle towards the centre.

(b) The velocity vector of a particle at a point is always along the tangent to the path of the particle at that point.

(c) The acceleration vector of a particle in uniform circular motion averaged over one cycle is a null vector.