Why doesn't oxygen burn?

Oxygen does not burn, It supports combustion. Users of oxygen have their clothes saturated with oxygen, and this is the source of the danger. Their clothes can go up in flames because of it. That's why the rule is, "No smoking around an oxygen user." 

Oxygen is not flammable because it is not a gas.

2.The forces are unbalanced.

5.The net force is to the right.

6.The book is moving to the right.

Explanation:

correct on edge :)