chemical to thermal mechanical to thermal mechanical to chemical chemical to mechanical
I am hesitating between 4 options to answer the following question, which option should I choose?
Question: A carpenter covered a piece of wood with a thin sheet of paper. He struck the covered piece of wood with a hammer. The impact left a small hole in the paper that smelled of smoke. Which kind of energy transfer did this event most likely demonstrate?
Possibilities:
- chemical to thermal
- mechanical to thermal
- mechanical to chemical
- chemical to mechanical

mechanical to thermal