Work, Energy, and Power (Grade 12 NSC Matric Physical Sciences): Flashcards

Work depends only on start/end positions, not path taken

Gravity

$W_{\text{conservative}} = -\Delta E_p$

Work depends on the specific path taken

Friction

PE can be defined for conservative forces

Mechanical energy not conserved; converted to other forms

$W_{\text{non-conservative}} = \Delta E_k + \Delta E_p$

No non-conservative forces act

Thermal energy