Sedimentary rocks are probably most vulnerable to weathering because they are formed from cemented (sometimes loosely) particles of other rocks.
Small pieces of clay.
Chalk would weather fastest, followed by limestone.
Rocks weather fastest in a warm and wet climate because the combination of moisture and high temperatures accelerates chemical reactions that break down the rock.
Igneous rock.
Sedimentary rocks would weather the fastest, especially ones like limestone, because it's made mostly from calcium carbonate, which is easily dissolved by the slightly acidic rainwater.
Sedimentary
limestone
Sedimentary rock weathers the fastest and easiest
you carnt cut rock
You would say the rock has been metamorphized.
hard
A normal fault would form.