1. The problem statement, all variables and given/known data http://www.collegeboard.com/prod_downloads/ap/students/physics/ap06_frq_physics_b_form_b.pdf I'm trying to do problem d on page 6. 3. The attempt at a solution I divided the distance by the time to get each velocity and graphed it. When I took the slope of the line, however I ended up with 4.7. Isn't the answer supposed to be 9.80 if we're calculating the acceleration due to gravity?