A certain spring compressed $0\mathrm{.}20$ m has $20$ J of elastic potential energy. The spring is then cut into two halves and one of the halves is compressed by $0\mathrm{.}20$ m $.$ How much potential energy is stored in the compressed half of the spring?

A$)5$ J

B$)10$ J

C$)14$ J

D$)20$ J

E$)40$ J

Ans: D

Difficulty: Medium

SectionDef: Section $10-3$