Answer :
A car stopped at the top of a hill
Explanation :
Definition of potential energy : energy stored that depends upon the relative position of various parts of a system
I think the reaction involved here is a redox reaction in acidic conditions. To balance this type of reaction, we do as follows:
Balance the O atoms in each side by adding H2O on either side.
Balance H atoms in each side by adding H+.
Balance the charges by adding electrons.
Hope this helps.
