Question

Average acceleration vector for a particle having uniform circular motion is

• A. A constant vector of magnitude $v^2/r $
• B. a vector of magnitude $v^2/r$ directed normally to the plane of motion
• C. null vector
• D. equal to instantaneous acceleration vector at start of motion

Answer 1

Answer: (C)

Average acceleration in uniform circular motion has zero magnitude and arbitrary direction so it is a null vector.