Suppose you increase your walking speed from 6 m/s to 14 m/s in a period of 1 s. what is your acceleration?

acceleration = 8 m/s²

Explanation:
Acceleration is defined as the rate of change of velocity.
This means that:
acceleration =
We are given that:
V2 = 14 m/sec
V1 = 6 m/sec
We are also given that the duration is 1 sec, this means that:
t2 = 1 sec
t1 = 0 sec

Substitute with the givens in the above equation to get the acceleration as follows:
acceleration = = = 8 m/s²

Hope this helps :)