Adrianna is doing her investigation on a hot air balloon made from bin liners. The research question is "what is the relationship between the uward force eperienced by a hot air balloon and its temperature". It is quite difficult to Measure the force on the balloon since it is so small so she's going to measure the initial acceleration using video analysis.

There are marks for safety considerations in in the criteria. Students often make these up since there aren't really any safety considerations to consider. However in this example there certainly are. These are definitely worth mentioning in the report since they can increase the score in that criteria. This aspect is ignored if there are no real safety considerations so making something up is pointless.