At to = 2.00 s, the acceleration of a particle moving at constant speed in counterclockwise circular motion is al = (1.00 m/s2 )i + (2.00 m/s3 )j At to = 6.00 s (less than one period later), the acceleration is az = (2.00 m/s? )i - (1.00 m/s2 )j The period is more than 4.00 s. What is the radius of the circle? Number 4.557 Units m