List of physics parameters

The physics parameters of the game are listed below.

[edit] Parameters

Time step: 0.0333333 seconds (30 Hz)
Iterations per time step (of the constraint solver): 10
- Note: The game uses an old version of Box2D. Both the number of position and velocity iterations are the same.
Frames / steps per second: 30
- 30 ticks equals 1 second

Gravity is 300 m/step² (the vector is <0, 300>)
- That is 300 m/sec²
There is no air resistance. Box2D does not support air resistance (although linear damping could possibly be considered such)

Object	Dimensions	Density	Friction	Restitution	Linear damping	Angular damping
Static rectangle	n/a	n/a	0.7	n/a	n/a	n/a
Static circle	n/a	n/a	0.7	n/a	n/a	n/a
Dynamic rectangle	n/a	1 kg/m²	0.7	0.2	0	0
Dynamic circle	n/a	1 kg/m²	0.7	0.2	0	0
Goal rectangle	n/a	1 kg/m²	0.7	0.2	0	0
Goal circle	n/a	1 kg/m²	0.7	0.2	0	0
Unpowered wheel	20 m (radius)	1 kg/m²	0.7	0.2	0	0
Clockwise wheel	20 m (radius)	1 kg/m²	0.7	0.2	0	0
Counter-clockwise wheel	20 m (radius)	1 kg/m²	0.7	0.2	0	0
Water rod	4 m (width)	1 kg/m²	0.7	0.2	0.009	0.2
Wood rod	8 m (width)	1 kg/m²	0.7	0.2	0.009	0.2

Box2D uses kilograms, meters, and seconds. Even if they may not appear that way on the screen, that is how the units are designed.

u is an unofficial unit that corresponds to the weight of a wheel. Its exact value is PI*(20 m)²*1 kg/m² (approximately 1256.63706 kg).