1. The problem statement, all variables and given/known data Calculate the average acceleration of the tip of the second hand from the moment it hits the 12 to the moment it hits the 3 position. The radius is 5 cm. Its a clock by the way. I've been at it for over an hour and am beggining to susspect my text book is wrong. 2. Relevant equations a= v2 - v1 / t 3. The attempt at a solution I got 0.0047 m/s squard. The text book says its 4.9 x 10 to the power of negative four [S 45 W]. So 0.00049 m/s squard.