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Frequently used equations in physics. Appropriate for secondary school students and higher. Mostly algebra based, some trig, some calculus, some fancy calculus.
- Equations of Motion
Make velocity squared the subject and we're done. v 2 = v 0...
- Special Symbols
Reference space & time, mechanics, thermal physics, waves &...
- Work
Raising a book takes work. Raising a book raises its energy....
- Coulomb's Law
Discussion introduction. The force between two point charges...
- Physical Constants
The Physics Hypertextbook ©1998–2024 Glenn Elert Author,...
- Vector Resolution and Components
Discussion. orthonormal coordinates. An electro-optical...
- Interference and Superposition
Waves are incorporeal. When they meet, they pass through one...
- Periodic Table of The Elements
The most obvious periodic properties are atomic radius (or...
- Equations of Motion
Review the units of work, energy, force, and distance. Use the equations for mechanical energy and work to show what is work and what is not. Make it clear why holding something off the ground or carrying something over a level surface is not work in the scientific sense.
Energy is an abstract scalar quantity associated with motion (kinetic energy) or arrangement (potential energy). Energy is not measured, it is computed.
The equations for relative motion, discussed in Motion in Two and Three Dimensions, provide a link to calculating the kinetic energy of an object with respect to different frames of reference. Example \(\PageIndex{2}\): Kinetic Energy Relative to Different Frames
The quantity \(\frac{1}{2}mv^2\) in the work-energy theorem is defined to be the translational kinetic energy (KE) of a mass \(m\) moving at a speed \(v\). ( Translational kinetic energy is distinct from rotational kinetic energy, which is considered later.)
Use the following equation to calculate the amount of energy in the. kinetic energy store. of a moving object: Energy in the kinetic energy store (Ek) = 0.5 x mass (m) x velocity² (v²) \ (Ek =...
We have shown, from Newton’s second law of motion, that energy is conserved for constant forces when we add the potential energy $mgh$ to the kinetic energy $\tfrac{1}{2}mv^2$. Now let us look into this further and see whether it can be generalized, and thus advance our understanding.
