#$&*
course PHY 232
Need further instructions please.
Preliminary ObservationRun the program kinmodel, accepting all defaults by using the 'Enter' key to answer the prompts on your computer (the computer will then automatically pick the selection with the asterisk) and observe the particles or 'billiard balls' bouncing around the screen and off one another.
• 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?).
• Watch the 'blue' particle, and speculate on what property of this particle is different from that of the other particles.
• Watch as the 'red' particle sometimes turns yellow. What causes this? What property does the particle have when it is yellow?
• What might the graphs represented at the right of the screen represent?
• 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.
Before reading further email your instructor with your best answers to these questions. There are two good reasons for not reading ahead: If you get your answers by reading ahead your instructor will be able to tell, and if you read ahead you won't learn as much.
The KEx and Key values are oscillating from about the high 800s to 1100.
The average time between collisions of the red particle is from 3 to 7 seconds. If it comes into contact with a slow green atom, its time is slower.
Obliviously, the blue particle has more mass, therefore it is slower.
I actually never see the red particle turn yellow.
I also do not see any graphs in the two little black boxes.
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@& Your work here is OK. There are some apparent glitches in the program, so concentrate just on the KE_x and KE_y values.*@