Alice is an alligator. Her swimming speed is 1.80m/s. a. How much time is needed

Question

Alice is an alligator. Her swimming speed is 1.80m/s.

a. How much time is needed for her to swim 200m in a lake?

b. Alice then swims 200m DOWNSTREAM in a river taking 80s. What is the speed of the current?

c. Alice must swim home to be safe from a formidable predator. She figure since it only took 80 seconds to get where she was, that it wont take long to return. How much time will she need to swim back home (200m UPSTREAM) in the same river?

d. Is it safe to assume that one can get upstream as quickly as one gets doemstream?

Explanation / Answer

a. d=vt 200 = 1.80t t=111.111 sec b. d=(v + v of current)t 200 = (1.80 + v)80 v=.7m/s c. d=(v - v of current)t 200 = (1.8 - .7) t t= 181.818 sec d. No, going upstream is slower because you would be moving slower against the current rather than with it. Hope this helps! Rate lifesaver :)

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