Problem 4. A 1 kg block attached to a spring with force constant 25 N/m oscillates on a horizontal,friction less air track. At t = 0, the block is released

from rest at x = -3 cm. (At that time, the spring is compressed by 3 cm). Find (a) the period of its motion, (b) the maximum values of its speed and acceleration. (c) Determine the position, the velocity and the acceleration as a function of time and graph each of them for three periods.