I'm having some difficulty in an online class. Here is a screen shot for reference: 1. The problem statement, all variables and given/known data: I'm doing a physics lab (screen shot is available above). The procedure says: The small object I'm using is a small pecan in it's shell. As you can see from the screen shot I have already recorded the time column from the experiment. I'm having a difficult time with kinematic velocity (because I don't understand the equation) and the kinetic energy (because the KE formula asks for mass and I do not know the mass of the almond. This lab was not specific to mass, only specific of using a small object. More specifically it says: to use a "small object (thread spool, small ball)") 2. Relevant equations: Kinematic velocity = v0 + acceleration*time Kinetic Energy = ½mv^2 = mgh 3. The attempt at a solution: I don't know how to go about either one of these. I'm sorry. The book is confusing me, too.