Here, using the graph we want to talk about the situation therein
At a certain height, the object moved some distance in the rightward direction.
After sometime, it began moving upwards thereby increasing in height at a constant speed. When it reaches a point, it further moved upwards at a higher speed.
Till it reached a maximum point.
From the maximum point, it began moving downwards, decreasing in height till it comes down to a position of rest lower than its starting position