Ariver has a steady speed 0.500 m/s. a student swims upstream a distance of1.00 km and swims back to the starting point. a) if the student can swim ata speed of 1.20 m/s in still water, how long does the trip take? b) how muchtime is required in still water for the same length swim? c) intuitively, whydoes the swim take longer when there is a current?

1.2 in still water would be 1.2-0.5 upstream

0.7 ups

1.7 downs

gravity

explanation:

the skeletons of most mammals reach a certain size and then stop growing. however, many animals, including some mammals, keep growing throughout their lives. kangaroos, for example, just keep growing and growing until they die. also, the longer an animal lives the greater the chance it might catch some deadly disease.