Question-

A person standing on a horizontal floor feels two forces: the downward pull of gravity and the upward supported by the floor. These two forces:

1. None of the above

2. Have equal magnitudes and form an action/reaction pair

3. Have unequal magnitudes and form an action/reaction pair

4. Have equal magnitudes but do not form an acton/reaction pair

5. Have eunequal magnitudes and do not form an action/reacion pair