AP Physics 1: SHM Graph Practice destion 1: - time 4AT 1/2 T 3/T T Answer all of the following as time intervals beginning or ending at: t = 0, '/4T, 1/2T, '/4T, T. Sketching graphs would likely be helpful to answer, but make sure to answer in terms of intervals. a. Identify all time intervals with positive position. Identify all time intervals with positive acceleration. O. T c. Identify all time intervals with positive force. d. Sketch a graph of kinetic energy vs time