Distance, vector quantities

[dance_sg]

1. In still water, a student can swim at 1.2 m/s. She swims perpendicularly across a 40 m wide river, landing 30 m downstream. In crossing the river, what distance does the student move?



2. d=df-di, cosine, sine, tangent



3. Again, i tried drawing out a picture. I made 40m the x axis, and 30m the y axis. Am i trying to solve for the hypoteneuse? Also, what am i suppossed to do with the 1.2m/s. is it just there to try and mess me up? or is it important for the question?

 

[turin]

Please don't type in bold face; it is difficult (for me) to read.

Am i trying to solve for the hypoteneuse?

That's what I would do.

Also, what am i suppossed to do with the 1.2m/s.

Data sufficiency.

 

[dance_sg]

sorry. i will remember that for next time.

and ok! thank you. i figured it out