Warm up• The Spurs coyote shoots a t-shirt out of his t-shirt cannon straight

up into the air. If you record the total time it is up in the air to be 3.6 s. How high did it go?

Physics HonorsA/B –Day 09/28/15

Vectors and intro to 2-D Motion

Agenda

• Vectors

• Lab

Vectors• Remember a vector has both magnitude and direction

• Examples •Displacement •Velocity•Acceleration

• Symbolized by an arrow on top of a letter • Boldface in the book

Vectors• Size of Vector represents magnitude

•

Vector Addition• Graphically Vectors can be added together

𝐶→

=𝐴→

+𝐵→

Vector Addition by Components• In problems we will break vectors into components

𝐶→

=𝐴→

+𝐵→

Vector Addition by Components

• How do you break a vector into components

𝜃

Vector Addition by Components

• How do you break a vector into components

is the magnitude of A

𝜃

Vector Addition by Components• In problems we will break vectors into components

Vector Addition by Components• In problems we will break vectors into components

c

Vector Addition by Components• In problems we will break vectors into components

+

ExampleAdd and

Example• A football player runs directly down the field for 15 m before turning

to the right at an angle of 25º from his original direction and running an additional 25 m before getting tackled. What is the magnitude and direction of the runner’s total displacement?