My 2005 Ford Explorer makes a thumping sound when im slowing down. Why? on 2005 Ford Explorer

when the vehicle is winding down it sounds like something hits. From 1 - 10 i would say that the sound would be a 6 you can also feel it when that happens.

Asked by for the 2005 Ford Explorer
poss rear wheel beraing, very common
How would I be sure this is the problem? if it is?