PHYS 2001

1
PHYS 2001
Spring 2009

• Summing Vectors
• The Steps
• Break up into components
• Add together x-components
• Add together y-components
• Use Pythagorean Theorem and tan-1? for magnitude
  and direction of resultant

2
PHYS 2001
Spring 2009
CT1
has a magnitude of 12 m/s and has a
magnitude of 5 m/s. What is the magnitude of
if...
y
x
3
PHYS 2001
Spring 2009
CT2
y
x
4
PHYS 2001
Spring 2009
CT2
y
x
5
PHYS 2001
Spring 2009
CT3
y
y
x
x
2
3
4
1
6
PHYS 2001
Spring 2009
EX1
Calculate A B
A 12 m B 5 m
A ? B
A (? B)
7
PHYS 2001
Spring 2009
EX2
A turkey, drunk on the euphoria of surviving the
holidays, wanders around the barnyard. It starts
by walking 25 m at 40º north of east, then walks
10 m due west, before walking 20 m at 30º east of
north. What is the total displacement of the
turkey?
8
PHYS 2001
Spring 2009
EX3
A plane sits on a runway facing due west. At
takeoff, the plane rolls 400 m down the runway,
then lifts off the ground, rising to a height of
1000 m as it flies 800 m due west. Then the
plane turns due southwest and flies for another
600 m while descending to an altitude of 800 m.
What is the distance between the planes initial
and final positions?