# The Manga Guide to Physics  ## Metadata - Author: [[readwise.io]] - Full Title: The Manga Guide to Physics - Category: #articles - Summary: Forces in different directions can balance each other out, causing an object to remain at rest. When applying a force to an object, consider the direction and magnitude of the force to understand its effect on motion. The laws of physics explain how forces influence the movement and energy of objects. - URL: https://readwise.io/reader/document_raw_content/179638740 ## Highlights - In terms of geometry, −a is simply a vector of the same magnitude as a , but in the exact opposite direction. The 0 on the right side of this equation represents zero as a vector, referred to as a zero vector. When vectors cancel each other out in this way, an object is said to be in equilibrium. ([View Highlight](https://read.readwise.io/read/01j15pjbbqw3q6j45bcw5xe762)) - Because of universal gravitation, cosmic dust in outer space gathers into giant masses over time—such as the earth or the other planets. ([View Highlight](https://read.readwise.io/read/01j15sq4n2d150mhqykf4z19rr))