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CLASS EXERCISE # 1  13 June 2005
1.
(2 points) Determine the
and
components of a vector of magnitude 4.7
BC
m in a direction 35° west of north. Be sure to include the correct signs!
The angle of this vector is
90°
35°
125°
)
œœ
The
component is
B
cos
4.7 m cos 125°
4.7 m
0.574
2.70 m
Eœ
Ð
Ñ
Ð
Ñ
œ
Ð
Ñ
Ð
Ñ
œ
)
The
component is
C
sin
4.7 m sin 125°
4.7 m 0.819
3.85 m
Ð
Ñ
Ð
Ñ
œ
Ð
Ñ
Ð
Ñ
œ
)
2.
A vector in the fourth quadrant has an
component of 10.0 m and an
B
angle
30°.
)
œ
(a)
(1 point)
Make a sketch of this vector.
(b)
(3 points) Determine the magnitude of this vector and its
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This note was uploaded on 02/11/2012 for the course PHYSICS 112 taught by Professor Fretwell during the Summer '08 term at Iowa State.
 Summer '08
 Fretwell

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