Vector Applications
Magic orienteering by flickr user AlbeJTD

A ball is thrown horizontally against a wall with a velocity of 10 m/s. It rebounds with a velocity that has a magnitude of 75% of the initial velocity.
Visualizing the Process ...
Sketch two vectors to represent the two velocities.
>
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ai
-t
The Triangle Method
-to >
p
ti
Resultant of Forces
(Addition of Vectors)
http://www.walter-fendt.de/ph14e/resultant.htm

The Triangle Method ...
HOMEWORK
We use the triangle method when the vectors are arranged tip-to-tail.
6cm
Scale: 1 cm = 2 km
10cm
RESULTANT
23.4 km 59° S of E
RESULTANT
11.7 cm 59° S of E
Remember, we use measurements with a ruler and protractor to find
the \"answers.\"

You try ...
HOMEWORK
Add each pair of vectors using the triangle method.
Find
Find
is 3 meters east
is 3 meters southwest
is 4 meters north
is 4 meters west

Use the TRISOLVE program to
solve each of the following
problems.

You try ...
HOMEWORK
Add each pair of vectors using the triangle method.
Find
is 3 meters southwest
is 4 meters west
Finish this problem for
HOMEWORK

A man walks 350 m north, then 175 m east, and then 150 m
south. How far and in what direction is he from his starting point?
Round your answers to the nearest whole numbers.
HOMEWORK

Jack jogs north at 15 km/h for 30 minutes, and then turns east and
jogs at 12 km/h for 20 minutes.
HOMEWORK
(a) How far has he jogged in total?
(b) How far is he from his starting point?
(c) In what direction does he need to go to return directly to his
starting point?