Question

Sara lifts the 100 lb barbell over her head 10 times in one minute. Matthew lifts the same 100 lb barbell over his head 10 times in 10 seconds. Which student does the most work? Which student delivers the most power? Explain your answer

Answer 1

I put Matthew does the most work and power because he's lifting more than Sara and since he is lifting more weights in less that a minute, he has more power :p

Answer 2

*than* am I correct? o.O

Answer 3

work is a function of force * distance. time is not a part of the equation, therefore is relevant to determining the amount of work done. power is energy / second therefore whoever expends the most energy in the least time delivers the most power.

Answer 4

so was my answer correct? xD

Answer 5

judging by my statements , what do you think?

Answer 6

yes? :)

Answer 7

look again and read the first part more carefully.

Answer 8

So they are doing the same work? But Matthew is doing more power since he is getting more done in less time? xD

Answer 9

yes, well done.

Answer 10

yay.. :p