Answer:
velocity
Step-by-step explanation:
Acceleration is defined as the rate of change of velocity. It is vector quantity. Its SI unit is m/s^2.
The formula for the acceleration is given by

Where, v is the final velocity of the object and u is the initial velocity of the object.
As we know that in velocity time graph, velocity is on the Y axis and time is on the X axis.
Slope of a graph is given by the ratio of Y axis intersept to the X axis intersept.
So, the slope of velocity time graph gives the value of acceleration of the object.