1. The problem statement, all variables and given/known data Find each particle's velocity at t=7.0s. Work with the geometry of the graphs, not with kinematic equations. 2. Relevant equations 3. The attempt at a solution I'm not sure how to arrive at an answer. For the previous question (velocity from graph b) I found the value of -20 m/s by reading the graph and before that (velocity from graph a) I did a simple delta/delta[t] calculation and got -10 m/s. My issue is that I can't find an velocity at t=7.0s for graph C (the acceleration graph.) Please help. Thank you.