#$&*
course Phy 232
•Watch the KEx and KEy values as they change with each collision, representing the total x and y kinetic energies of the particles.•Watch the 'red' particle for a couple of minutes, estimating the average time between its collisions and its average speed (one of the speeds given near the top of the screen corresponds to that of the 'red' particle--which is it?).
The speed corresponding to the red particle is most likely the first number on the left.
• Watch the 'blue' particle, and speculate on what property of this particle is different from that of the other particles.
The blue particle turns the green particles yellow.
• Watch as the 'red' particle sometimes turns yellow. What causes this? What property does the particle have when it is yellow?
The red particle turns yellow as a green particle that has been turned yellow touches it. The yellow particle moves with a much greater velocity than before it was turned.
• What might the graphs represented at the right of the screen represent?
The graphs seem to be bar graphs that most likely represents speed.
• Strike the 'S' key to stop the simulation, and if you are done give the appropriate response to the prompt to quit the program. CTRL-ALT-DELETE will also stop the program, but if you're not careful it will reboot your computer so avoid that option if you can.
"
@&
Right. One is a frequency distribution for the speeds, the other for kinetic energies. The two look pretty similar, but the KE is proportional to v^2, which does have an affect on the shape of the graph.
*@