Motion chapter in physics or any other chapter, follow the 4 step process of Examfear which is (1) Watching videos (2) Notes (3) Ask Questions (4) Take a test

You can also have a written note of headings, diagrams, expressions and formulae. Revise them appropriately every day until you get confidence. Practice numerical problems and this will increase your understanding.

The main technique to remember things is to keep revising again and again. Also working out more problems related to the topic.