Hello all, this is my first post on this forum having read it from time to time when in need of help for my physics So to the point. My phsyics teacher is meeean, he gave us this huge assignment just before the summer break just so that we wouldn't be given the opportunity to slack of ! We are to find the best suitable simple (not to extreme) boat form that has the best speed while applying a certain amount of force to it.. I thought the question was kind of vague, but he insisted on us solving it... So we got a tub and some measuring devices, and substance to make boat shapes out of. Sooooo my question is basically, if i have some graphs showing the position vs time of the boat at different drag force and different weights of the boat, how do i find a general equation for the graph? I have tried best fit lines, and arrived at some equations.. but.. argh... I'm just stuck.. completely stuck...sick of school and longing for that long summer break, so my brain doesnt really function that well.. Any help would be greatly and deeply appreaciated! Student in trouble!