When members of the lower class are unable to achieve symbols of success via conventional means, they feel anger, frustration, and resentment. These feelings are collectively known as ?

strain

Explanation:

Its when members of lower class feels frustrated by not achieving what they desire.this in turn creates a lot of negative effects in them where they become angry at times,having resentments and developing signs of depression with suicidal thoughts.

~kinetic ~potential

explanation:

kinetic and potential energies would be types of mechanical energies.