How does a lid slow down evaporation cooling??

It reflects the gas from entering the air and the other gases from the bottom, pushes the top gases that can't get through making it slow down, and eventually stop.

Explanation:

Ex: When you go on a slide and sit at the bottom, the other kids go down and stop behind you. So does the next kid and the next stopping the process of kids going down the slide.

here we know that ball will drop down by total distance 3.2 m

so here we know that

now using kinematics

now in the same time it will cover horizontal distance of 0.75 m

so speed of the ball will be

true tan speed = ang vel x radius