Power
•
P
ave
= W/
Δ
t
(average power)
•
P = dW/dt ( instantaneous power)
•
1 watt = 1 W = 1 J/s
•
1 kW-h
(unit of work)
•
P = dW/dt
•
= F cos
Φ
ds /dt
•
= F v cos
Φ
•
=
F . v