The acceleration due to gravity is the constant of variation.
What is the acceleration due to gravity of a falling object?
The velocity of an object in meters per second varies directly
with time in seconds since the object was dropped, as
represented by the table.
Velocity of a Falling Object
4.9
Time
Velocity
(seconds) (meters/second)
0
19.8
m
19.6
WN
29.4
39.2
4