HL:
TZ1: https://www.reddit.com/r/IBO/comments/8ipw9u/exam_discussion_physics_hl_paper_2_tz1/
TZ2: https://www.reddit.com/r/IBO/comments/8ipwaw/exam_discussion_physics_hl_paper_2_tz2/
SL:
TZ1: https://www.reddit.com/r/IBO/comments/8ipwdo/exam_discussion_physics_sl_paper_2_tz1/
TZ2: https://www.reddit.com/r/IBO/comments/8ipweg/exam_discussion_physics_sl_paper_2_tz2/