When an object falls from a height, its speed, v metres per second after t seconds of fall, is given by the equation v = 9.8 t. Is the speed proportional to the time?
The equation of speed is given by v = 9.8t
The above equation is of the form y = kx, where k is the constant of proportionality.
Here, k = 9.8
Thus, the speed is proportional to the time taken.