What do you conclude about the object?
(1) Moves with a constant speed.
(2) Moves with varying speeds.
(3) Moves with a non zero acceleration.
(4) Is at rest.

(1)  It is always positive.
(2)  It has both magnitude and direction.
(3)  It can be zero.
(4)  Its magnitude is less than or equal to the actual path length of the object.

The acce le ration of the above velocity-time graph is:
(1) Non-uniform.
(2) Zero.
(3) One.
(4) Uniform.