An object moving at a constant speed requires 6.0 s to go once around a circle with a diameter of 4.0 m. What is the magnitude of the instantaneous acceleration of the particle during this time?
1) 2.2 m/s2
2) 2.7 m/s2
3) 3.3 m/s2
4) 3.8 m/s2
5) 4.4 m/s2
Answer: 1