Practice question
Question
An object in uniform circular motion has a centripetal acceleration of 16 m/s² and a radius of 4 m. What is its linear speed?
Explanation
Centripetal acceleration a_c=v²/r=4π²r/T²=4π²rf² per NCERT circular motion. Substituting r and frequency/period gives a_c value matching 8 m/s. Other options use incorrect r or f, so C is correct.