An object moves at constant speed around a circle of radius 1.0 m, completing one revolution in 2.0 s. What is the magnitude of its acceleration?
Correct answer A. π²
Explanation
Centripetal acceleration equals 4π²r/T². With r = 1.0 m and T = 2.0 s, this gives 4π² × 1 ÷ 4 = π² m/s².
Answer checked How we write and check questions
Discussion