variable | meaning | unit |
---|---|---|
E_p | potential energy | kg \cdot (\frac{m}{s})^2 |
E_k | kinetic energy | kg \cdot (\frac{m}{s})^2 |
W | work | \frac{kg \cdot m^2}{s^2} = J |
P | power | \frac{kg \cdot m^2}{s^3} = W |
Energy that a particle currently has
\frac{m \cdot v^2}{2}
Is always constant: E = E_p + E_k
W = F \Delta x
P = F v
Good forces are these that can be converted to potential energy