text: physics question power output #18? as compared to jack, jill does twice the work in half the time. jill's power output is:   a. the same as jack's power output.  b. one-half as much as jack's power output.  c. twice jack's power output.  d. four times jack's power output. i would say it's 4 times.  jill does twice the work in the same time, that's twice.  jill does the same work in half the time, that's twice, so reason dictates that the answer would be four.