i have been on holiday and am confused on where to start and this is due tommorrow

1) if a gale is blowing 30ms-1 from the west, what is its component in a northerly direction ?

2) if a tide flows north eastwards at 5 ms-1, how quickly is a floating log carried

i) to the north ii) to the east

any help much appreciated

## Higher Physics homework help

### x-amz-x

Posted 31 August 2009 - 06:02 PM

hey

if a gale is blowing from west to east, there is no northerly direction

therefore the component is 0ms-1

the tide is flowing at 45 degrees to both directions respectably

to work out the north, it is 5sin(45) from your basic knowledge of trig

hence the east direction can be figured from 5cos(45)

you should get

i) 3.54 ii) 3.54

btw, it is going north east so both components will be the same

hope this helps, just finished doing it myself

amz x

if a gale is blowing from west to east, there is no northerly direction

therefore the component is 0ms-1

the tide is flowing at 45 degrees to both directions respectably

to work out the north, it is 5sin(45) from your basic knowledge of trig

hence the east direction can be figured from 5cos(45)

you should get

i) 3.54 ii) 3.54

btw, it is going north east so both components will be the same

hope this helps, just finished doing it myself

amz x

### MoffatRFC

Posted 31 August 2009 - 06:48 PM

thanks verymuch for your reply i understand what you mean but im still a bit unsure on how to lay it out do i not need to draw any diagrams or anything ?

also is question one the same concept ? or something differnet i cant copy question one cause its diagrams sorry for wasting your time

also is question one the same concept ? or something differnet i cant copy question one cause its diagrams sorry for wasting your time

### x-amz-x

Posted 31 August 2009 - 08:42 PM

you could do a diagram for question 2, something, like a North, East, West, South, (the crossing straight lines, with each point labelled) with a line going off to the north-east, then label the 45 deg angles, you should be able to see the triangles for the trig.

and question 1 would be similar sort of question

hope this answers some of your questions

amz x

and question 1 would be similar sort of question

hope this answers some of your questions

amz x