question_answer

If a young man does 500 J of work in 5 s and old man does the same work in 10 s. Who has more power, young man or the old man?

Answer:

Case-I (Young man) Given,   \[W=500Jt=5s\] We know, \[P=\frac{W}{t}=\frac{500}{5}=100W\] Case-II (Old man) Given, \[W=500Jt=10\,s\] We know, \[P=\frac{W}{t}=\frac{500}{5}=50W\] Therefore, young man has more power.