A student does 500 J of work in 10 seconds pushing a box. What is the student's average power output?
A50 W
B5,000 W
C0.02 W
D500 W
Explanation
📌 Power = Work / time = 500/10 = 50 W. Distractor B multiplied instead of dividing; C used reciprocal (10/500); D reported the work as power — the classic "energy vs power" mix-up (energy is measured in joules, power in watts, and they must be divided by time to get from one to the other).