1. The problem statement, all variables and given/known data For my physics coursework I need to convert a curved graph into a linear graph. This will allow me to calculate the acceleration of the object. The experiment was repeated multiple times with the independent variable being the mass of the object. The object was dropped from a height and the time taken for the object to fall to the ground was measured. The object that was dropped was a paper helicopter. 2. Relevant equations a = v/t 3. The attempt at a solution http://s1.postimg.org/6ot1kfg4f/Helicopter.jpg [Broken] I attempted to solve this problem by using the inverse of time and applying to the graphs. However I get the value for acceleration to be 10m/s^2 which is inaccurate. This value is greater than the value for freefall.