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In physics, equations of motion are equations that describe the behavior of a physical system in terms of its motion as a function of time. [1] More specifically, the equations of motion describe the behavior of a physical system as a set of mathematical functions in terms of dynamic variables.
Mathematical symbols use a roman, serif font (½, +, √, cos) — except when they are applied to calculations with units. Units are written with a roman, sans-serif font (m, N, ℃) as are mathematical operations with numbers and units (7 kg × 10 m/s ÷ 3 s = 23.3 N).
Our goal in this section then, is to derive new equations that can be used to describe the motion of an object in terms of its three kinematic variables: velocity (v), position (s), and time (t). There are three ways to pair them up: velocity-time, position-time, and velocity-position.
The energy associated with motion is called kinetic energy. The energy associated with position is called potential energy. Potential energy is not "stored energy". Energy can be stored in motion just as well as it can be stored in position.
The momentum and energy equations also apply to the motions of objects that begin together and then move apart. For example, an explosion is the result of a chain reaction that transforms potential energy stored in chemical, mechanical, or nuclear form into kinetic energy, acoustic energy, and electromagnetic radiation.
During simple harmonic motion, energy is constantly exchanged between two forms: kinetic and potential; The potential energy could be in the form of: Gravitational potential energy (for a pendulum) Elastic potential energy (for a horizontal mass on a spring) Or both (for a vertical mass on a spring)
Physics. Equations of Motion. The kinematic equations of motion are a set of four equations which can describe any object moving with constant acceleration. They are often referred to as the 'suvat' equations due to the variables they include. These are: s = displacement (m) u = initial velocity (m s −1) v = final velocity (m s −1)
