4.4 - Power

Defining Power • Power is the rate at which work is done • Power is the rate at which a force does work • Units of power are joules/second, or watts • P_avg=ΔW/Δt • P=dW/dt=(F ⃗⋅dr ⃗)/dt=F ⃗⋅(dr ⃗)/dt=F ⃗⋅v ⃗ 2003 Free Response Question 1