| Blown By Lung Power (200 fps) | Go! | |
| Launched at 30 psi (1000 fps) | Go! | |
| Launched at 55 psi (1000 fps) | Go! | |
| Launched at 80 psi, but the hose popped off during launch (1000 fps) | Go! |
In this video series, a battery is blown throw a tube at high speed into a box. The box is placed on a low-friction track so that it can move freely upon impact.
Battery Mass: 0.024 kg
Box Mass: 1.152 kg
The first video was shot at 200 fps because the battery was blown with human lung power. The latter three videos were shot at 1000 fps because the tube was pressurized with a pump before launch, resulting in a much higher launch speed. During the final shot at 80 psi, the hose connecting the pump to the launch tube popped off during the launch, releasing a significant amount of pressure and resulting in a slower than expected launch speed.
When doing calculations, please note that the battery was not tightly constrained within the box, and it is highly likely that the battery bounced backward inside the box.
The apps for these videos have a simplified interface without automated plotting or graphical analysis tools.
Questions:
- What is the initial momentum of the battery before impact?
- What is the final momentum of the battery + box after impact?
- Was momentum conserved in this collision?
- If momentum does not appear to be conserved, what could have accounted for the discrepancy?
