How might physical weathering affect a sample

It might break the sample into a smaller object or round the edges slightly.

Step-by-step explanation:

Because, the dictionary defonition for physical weathering is, " a term used in science that refers to the geological process of rocks breaking apart without changing their chemical composition.". The sample will either become more rounded or break into smaller pieces depending on the time the sample is left to weather.

i belive those are the ones that are under 90 degreese.