What is the Plane's Bearing from Its Original Position After Changing Course?

[nettie2311]

Homework Statement

A plane is flying at 56 km/h at a bearing of 65 degrees. After flying for 3 hours the plane heading is changed to a bearing of 90 degrees. After flying for a further 1 hour at 56 km/h what is the plane's bearing from its original position?



No clue how to answer this question...any help would be great..

Thanks,

 

[Delphi51]

Sketch the vectors. Use trigonometry to find their horizontal and vertical components. Add the horizontal components. Add the vertical ones.
Make a new vector with the totals. Sketch them. Use trigonometry to find the angle from beginning to end.

 

[nettie2311]

Thanks for the reply, but physics is totally new to me and I've been online to try to teach myself but I'm having no luck...can you be more specific.

 

[Delphi51]

56 km/h at a bearing of 65 degrees

Draw a cross and mark north, south, east, and west on the 4 directions.
From north, go 65 degrees toward east. Draw an arrow from the center of the cross at this angle. Mark its length 56 km/h x 3 hours = 168 km.
At the end of this vector, make a new cross and do the same thing for the second vector.