Interactive Lecture Demonstration
Prediction Sheet—Vectors
Directions:
Click here
to download the Prediction sheet. Write your name at the top to
record your presence and participation in these demonstrations. For
each demonstration below, write your prediction on this sheet before making any
observations. You may be asked to send this sheet to your instructor.
Only
after you have sketched your prediction, open the Vector Addition
simulation: https://phet.colorado.edu/sims/html/vectoraddition/latest/vectoraddition_en.html
and open Explore 2D. Drag the two vectors anywhere on the graph grid,
adjust their lengths carefully, and then click on the Sum> box
to view the vector sum. Does this
agree with your prediction? Move
the vectors around to show how the Triangle Rule results in the vector
sum. Describe how this results in the correct sum. 

Only
after you have sketched your prediction, use the Vector Addition
simulation. Recall that the vector difference a  b is the same as the
sum of a + (b). Does the result
agree with your prediction? If not, explain why. Move
the vectors around to show how the Triangle Rule results in the vector
difference. Describe how this results in the correct difference. 

Only
after you have sketched your prediction, again use the Vector Addition
simulation. Use the vectors a and b for the two v vectors
and recall that v = v_{2}  v_{1}. Does the result agree with your prediction? If
not, explain why. Also
use the simulation to verify that . 

Only
after you have sketched your prediction, again use the Vector Addition
simulation. Recall that b = a  b.
Does the result agree with your prediction? If not, explain why. Also
use the simulation to verify that b + b = a. 

Only
after you have sketched your prediction, click here
to see the result. Compare the result to your prediction and explain any
differences. 

Only
after you have sketched your prediction, click here
to see the result. Compare the result to your prediction and explain any
differences. 

Only
after you have sketched your prediction, click here
to see the result. Compare the result to your prediction and explain any
differences. 