Introduction to Kinetics

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Presentation transcript:

Introduction to Kinetics Honors Physics Introduction to Kinetics

Definitions Kinematics Kinetics Describing motion without referring to the cause Ex: time, position, velocity, etc. Kinetics Describing motion by referring to the cause Forces

Types of Forces Applied force Weight Normal Tension Friction Spring Buoyancy Thrust Lift Drag Magnetic Electric & more!

The Normal Force Contact force Perpendicular to the surface of contact

The Tension Force Contact force Exists in taunt ropes, strings, cords, cables, etc. Directed along the tether Can only pull, not push

The Friction Force Contact force Resists motion Opposes motion along surfaces Directed parallel to the surfaces of contact Depends on texture & load

The Weight Force Non-contact The force due to gravity Note: gravity itself is not a force Long-range attraction between objects

Mass vs. Weight Mass Weight Constant, physical property of an object. A measure of how much gravity affects an object.

The Applied force Contact force The generic term used to describe a physical push or a pull on an object

All Forces have Direction! Line of action

Carbon Dioxide (CO2)