In an attempt to escape his island, Gilligan builds a raft and sets to sea. The wind shifts a great deal during the day, and he is blown along the following straight lines: 2.50 km north of west; then 4.70 km south of east; then 1.30 km south of west; then 5.10 km straight east; then 1.70 km east of north; then 7.20 km south of west; and finally 2.80 km north of east. What is his final position relative to the island?
OpenStax College Physics, Chapter 3, Problem 23 (Problems & Exercises)
It goes all the way to Vector G not just Vector F
Hello Openstax2021, thank you noticing the issue here. The issue is not that I forgot vector G, but rather than I labeled two different vectors both with the letter E. The final answer is correct, but obviously this creates confusion, and I have flagged the video for a re-do. With the intended vectors A to G, there are 7 vectors. There are 7 terms in the numerical expression for , which is correct, although, confusingly, only 6 in the algebraic expression. There are only 6 terms in the expression for since vector is entirely horizontal. While the final answer is correct, this error obviously needs to be corrected some time.
All the best,
This video was updated on Nov. 22nd, 2023