PHY100H1 Chapter Notes -Elastic Collision, Net Force, Inelastic Collision
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PHY100H1 Full Course Notes
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Document Summary
Everything in the universe moves: motion is one part of what physicists call as mechanics. The physics of motion is all about forces: forces need to act upon an object to get it moving, or to change its direction, because, changes in motion do not just happen on its own! So we need forces to get things happen: physicists uses standard deviations of second(s), meter (m), and kilogram (kg) when they study motions of an object. Velocity is a vector, whereas speed is not. Vector is a numerical value in a specific direction, and used to describe a specific amount of force and its direction! The amount of force is what we call as magnitude. Velocity: therefore, velocity is the speed of an object and the direction it is moving, velocity is also the rate of motion in specific direction, velocity can be constant or it can change by acceleration (forces)
