If its a ka thunk sound even on small bumps,Its most likely your STRUT MOUNTS.
Both ends
loose or bad u joints.
Your shocks are going out. You may also want to replace the springs as well.
Sounds like the rubbers are going in your shock absorbers.
Not extremely, but it will cause a noise (sometimes) when going over bumps and premature tire wear.
Bad strut or strut mount? Check for loose undercarriage components
a clunk noise over bumps
Probably strut mounts or control arm bushings.
Little rubber parts that help to cushion a car's suspension system, if they wear out you can hear a knocking noise when going over bumps.
The brackets that hold the brake pads in place are worn and are allowing the pads to rattle.
I had the same problem. It was the rear shocks.
could be control arm bushings gone bad