The recoil force on a moving charged particle, known as the AbrahamÂ–Lorentz force, is proportional to the derivative of this quantity.
The recoil force on a moving charged particle, known as the AbrahamÂ–Lorentz force, is proportional to the derivative of this quantity. The power emitted by a non relativistic point charge is proportional to charge squared times this quantity squared divided by the speed of light cubed. Torque can be written as the moment of inertia times one form of this quantity. That angular form of this quantity is equal to its tangential form divided by the radius. The derivative of this quantity is known as the jerk. At the surface of the earth, this quantity is equal to 9.8 meters per second squared. For 10 points, name this quantity equal to the rate of change of velocity. 
The recoil force on a moving charged particle, known as the AbrahamÂ–Lorentz force, is proportional to the derivative of this quantity.
acceleration [accept linear acceleration or angular acceleration, prompt on a]