400
On day 1, a dog moves a bone with 20 N of force 2 m. On day 2, the dog moves the same bone, the same way, but takes more time. On both days the dog did the _______________ work, but on day ______, the dog had more power.
On both days, the dog did the SAME work, but on day 1, the dog had more power (did the same work in less time).