Force is mass times acceleration: F=ma. If you apply a force over atimeyou get momentum and if you apply force over adistanceyou get energy. Acceleration times time is velocity, so it should more-or-less make sense that force times time is momentum: . What’s a lot less obvious is e...
Pretty much everyone, including the innumerate, has heard of Einstein’s E = mc2, energy equals mass times the speed of light squared.PBS calls itthe world’s most famous equation. While it is profound to prove that energy and matter are interchangeable, in day-to-day terms it’s not th...
(Potential Energy equals Mass of object timesgtimes Height above ground) In this case the ball weighs 0.5 kilograms (kg). Clayton is holding it 2 meters (m) above the ground. The acceleration caused by the force of gravity on earth is always 9.8 meters per second squared (m/s^2). So...
A planck energy is defined as a planck mass times planck length squared per planck time squared. The Calorie • For each context of the calorie, there exists a unit, the Calorie, that is by definition 1000 times the value. Therefore, a Calorie is a kilocalorie. A 15 degree Celsius ...
The net work on a system equals the change in the quantity12mv212mv2. Wnet=12mv2−12mv20Wnet=12mv2−12mv02 The quantity12mv212mv2in the work-energy theorem is defined to be the translationalkinetic energy(KE) of a massmmoving at a speedv. (Translationalkinetic energy is distinct fr...
The change in gravitational potential energy, ΔPEg, is ΔPEg = mgh, with h being the increase in height and g the acceleration due to gravity. The gravitational potential energy of an object near Earth’s surface is due to its position in the mass-Earth system. Only differences in gravita...
I prefer, if the norm of the 4-momentum always equals to the "invariant mass" m, for tardyons, photons and for (hypothetical) tachyons. Tachyons have an imaginary m and a real energy γ∗m. [Edit: Deleted last (wrong) sentence, that PAllen cited.] Last edited: Oct 2, 2...
Kinetic energy can be quantified as one half of the mass times the velocity squared (KE = 1/2*m*v²). In SI units, the mass should be in kilograms (kg), and the velocity in meters per second (m/s). In English units, the mass should be either pound mass (lbm) or slug, and...
The net work on a system equals the change in the quantity. The quantityin the work-energy theorem is defined to be the translationalkinetic energy(KE) of a massmoving at a speed. (Translationalkinetic energy is distinct fromrotationalkinetic energy, which is considered later.) In equation for...
We can say, let me draw that real quick, usually show it like vcm (velocity of center of mass), and there is an ω (angular velocity) at the same time. We say that the velocity in the middle here equals rω, where r is the radius of that wheel-shaped object. Okay. ...