We calculated a value for air pressure based on our experiment and compared it to the accepted value for air pressure. Our value was roughly half of the accepted value, yielding a 52% difference. The most likely source of error in this experiment involved our force equation. To complete this analysis, we needed to assume that air pressure and gravity were the only forces on the bottom of the can. However, the bottom of the can is supported by the midsection of the can. This causes us to get a lower value for the air pressure because the bottom of the can does not accelerate as fast as it would have if it were alone. In addition, we were not able to create a total vacuum inside the can. There is still a slight air pressure exerted by water vapor inside the can that counteracts the force of the outside air pressure. This also results in a smaller value for the air pressure.