Kluczowe pojęcia i definicje związane z pojęciem mocy. Różnica pomiędzy mocą i pracą.
|Power (||Rate at which work is done (or energy is transferred). SI units of |
|Watt (||Power equivalent to transferring |
|Equation||Symbols||Meaning in words|
|Power is the change in energy over the change in time.|
|Power is the work done over the change in time.|
Często spotykane błędy i nieporozumienia
- Some people confuse energy with power. Energy is a measurement of work done, while power is how energy changes with time.
- Sometimes people forget that we can measure power by the work done by a force. We can substitute the work done by a force
instead of change in energy into the equation
If the force is along the direction of motion, then
and the equation can be re-written
is a constant force, and a change in distance over time is average velocity, .