Question

A body executing uniform circular motion has at any instant is velocity vector and acceleration vector ___________

(a) Along the same direction

(b) In opposite direction

(c) Normal to each other

(d) Not related to each other

I got this question during a job interview.

I'm obligated to ask this question of Motion in a Plane in division Laws of Motion of Engineering Physics I

Answer 1

Right choice is (c) Normal to each other

For explanation: Velocity is along the tangent to the circular path and acceleration vector is along the radius. Thus a body executing uniform circular motion at any instant has velocity vector and acceleration vector normal to each other.