1. The problem statement, all variables and given/known data We had our lab yesterday in engineering physics where we had a car with nearly no friction descending down an incline plane. The incline was at 16 degrees, and we used data studio to record a crazy amount of trials at various distances. The point of this is to calculate gravity. I should also add, that there was a time taken from when the car passed two gates.. so we have an average of distances vs times (10 sets of data).. thats what the slope is. 2. Relevant equations and what i've tried Originally for the prelab i solved what i considered to be the correct general solution to find acceleration from the position equation of motion. I came up with -2( r sin 16) / t^2. This is obviously wrong because i'm not getting anywhere near gravity with this. I'm pretty sure i'm supposed to use the slope of a linear fit of the data points somehow into this, but for some reason i don't really understand how it relates to this equation. I thought the slope for the distance vs time^2 was supposed to be the acceleration.. guess i'm wrong.. anything to help me understand this and get me to the desired solution would be amazing.