Unladened Weight*: 137±1g
Full ladened weight**: 223±1g

Avg speed over 4.0m: 0.9ms^-1

Avg acceleration over 4.0m: 0.1ms^-2




*weight of everything - batteries and rubberbands
**Everything in. Batteries are 2x "SUPER" AA, 1x 9v energizer, 2 rubberbands.


Raw Data:

Distance(m)	Time1	Time2(s)
0		0	0
0.5		0.7	1.1
1.0		0.7	0.7
1.5		0.6	0.6
2.0		0.6	0.6
2.5		0.5	0.4
3.0		0.6	0.5
3.5		0.5	0.5
4.0		-	0.4


Cumulative	Time1	Time2	Time(avg)
0		0.7	1.1	0.9
1.0		1.4	1.8	1.6
1.5		2.0	2.4	2.2
2.0		2.6	3.0	2.8
2.5		3.1	3.4	3.25
3.0		3.7	3.9	3.8
3.5		4.2	4.4	4.3
4.0			4.7	4.7