Q: When gas pressure-forces are used to move an object the work is done on the object by?


Read this paragraph and choose the correct option from the provided answers:

When gas pressure-forces are used to move an object then work is done on the object by the expanding gas. Work can be done on the gas in order to compress it.

 Choices:

- contracting gas

- kinetic energy

- gravitational pull

- expanding gas


A:
expanding gas