Question

How to find retardation when velocity decrease in time?

Answer 1

I think that the retardation takes place when you apply brake from the cycle

Answer 2

If the velocity of a body isdecreasing with respect to time, the acceleration is said to be negative. Retardation is the rate of decrease in velocity. Negative acceleration is calledretardation. If the velocity of a body is decreasing with respect to time, the acceleration is said to be negative.