The graph given below represents motion of what? And what type of motion is it? Assume that the downward direction in the graph is negative. Also find the value of t. Assume no loss of energy anywhere. Assume disp =0 implies ground level.

Oscillatory motion is motion in which the object moves back and forth repeatedly. Periodic motion is motion in which the objects repeats a path after a regular interval of time.

All oscillatory motions are periodic but all periodic motions are not oscillatory.