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INI File | 1995-03-01 | 2.6 KB | 56 lines |
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- > seem to get my head round. Has anyone got any ideas on how to tackle the
- > problem? I suppose their really should be some sort of Newtonian Equasion
- > that should solve it..help!
-
- To work out who hit who you need to have two "strike zones" for the cars
- - one at the front, and one that covers the rest of the car. When a
- collision occurs, the car whose front zone was hit is the "ramming" car,
- and the other is the victim. If both cars' front zones were hit, it was
- a head on collision. Ok, now you know who hit whom, you need to modify
- the cars velocities a bit. There is a Newtonian equation to do this, and
- it's pretty simple - each object has a coefficient of elasticity which
- dictates how much of their energy is lost and how much is transferred in
- a collision. Put simply, you just subtract a bit of the ramming cars
- forward velocity and add it to the victim. For example:
-
- Car A has a horizontal velocity of 3m/s and a vertical velocity of 0m/s.
- Car B has a horizontal velocity of 1m/s and a vertical velocity of -1m/s.
-
- Car A strikes Car B and the resultant velocities are :
-
- Car A has a horizontal velocity of 2m/s and a vertical velocity of
- -0.125m/s.
- Car B has a horizontal velocity of 1.75m/s and a vertical velocity of
- -0.75m/s.
-
- So, what happened? Well, Car A transferred 25% of its velocities to Car
- B and lost 8.33% to friction, heat, etc. Car B transferred 12.5% of its
- vertical velocity to Car B, but because Car A's horizontal component was
- greater than Car B's, there was no return transfer. (Also note that I
- made these percentages up - increase or reduce them depending on how
- bouncy you want the cars to be...)
-
- Confused? Tough. :) Go get an A-Level Maths with Mechanics text book -
- they give you the real-life equations...
-
- (Actually, this reminds me I never finished my Newtonian extension that
- had all this stuff in it... Maybe I'll get round to it one day.)
-
- (Oh, and what TV show is this based on? I don't remember any shows about
- crashing into cars last time I was there... :) And how's Southampton
- doing? Are there any shops in The Marlands yet? Is The Joiner's Arms
- still there? Has Diamond finally closed? (I hope so... Bunch of
- bastards.) Is Game still in the Bargate Centre? I miss the old dump...
- *sigh* I guess I should've worked harder. Can you believe I flunked
- out of SIHE of all places? Oops, got a bit carried away...)
-
- --
- GCS -d+ H+ s++:- g+ p? !au a- w+++ !Productions 1995
- v* C+++ UB+++A++++ P++ L++ E+ N+++ http://satelnet.org/~mentat/
- K+ !W--- M-- V po- Y+ t++ 5+ jx G?
- R tv++ D- B--- e+ u** h f r++ !n y+ "No matter where you go, there you are."
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