A weight-lifter lifts a $2000\ \text{N}$ load by a vertical distance of $2.0\ \text{m}$ in $0.80\ \text{s}$. What useful power is developed in this action?
- A$800\ \text{W}$
- B$3200\ \text{W}$
- C$4000\ \text{W}$
- D$5000\ \text{W}$
Physics 0625 · IGCSE · Energy, work and power