A spring with a spring constant of 5.0 N/m has a 0.25 kg box attached to one end such that the box is hanging down from the string at rest. The box is then pulled down another 14 cm from its rest position. Calculate the maximum height, the maximum speed, and the maximum acceleration of the box.
The Attempt at a Solution
I found maximum speed and height but I cant find the maximum acceleration
the answer is 2.8m/s^2
what am I doing wrong?