Answer:
Deceleration is the opposite of acceleration.
The mathematical formula for deceleration is:
![Deceleration = (Final velocity - Initial velocity)/(Time taken)](https://img.qammunity.org/2021/formulas/physics/middle-school/7hdhmd3dvtjovj8pd4taxjo8aumb6i7zvx.png)
Uniform deceleration of an object can be defined as decreasing the velocity of an object in equal amount in an equal interval of time.
The graph attached below shows a constant decrease in the velocity with a uniform time interval.