Final answer:
The required parameters for calculating displacement with no acceleration are displacement, initial velocity, final velocity, and time. Final velocity equals initial velocity since there is no change in velocity without acceleration.
Step-by-step explanation:
The parameters involved in calculating displacement when there is no acceleration are: displacement, initial velocity, final velocity, and time. This is because displacement can be determined using the formula displacement = initial velocity × time when acceleration is zero. Initial velocity and time are known, and final velocity is equal to initial velocity since there is no change in velocity without acceleration.