Can someone with good physics knowledge briefly explain the answers to 4, 12, 16, 19, 20, 21, 23, and 25 from the AP Physics 1 College Board MC Practice pdf? I’d really appreciate any help.
Link is http://media.collegeboard.com/digitalServices/pdf/ap/ap-physics-1-2-course-and-exam-description.pdf
Starts from page 165