The Second Friedmann Equation describes the acceleration or deceleration of the expansion (or contraction). It describes the forces pushing or pulling on the expansion.
read moreIt is notable that time dilation is not limited to kinetic or gravitational time dilation, but by virtue of the unification of gravitation and acceleration by the Equivalence Principle of General Relativity, by acceleration as well. In all cases, Time Dilation is…
read moreJerk is the third derivative of position with respect to time .
read moreOverbar Indicates Average
read moreThe arrow indicates the quantity acceleration is a vector quantity. Related
read moreDerivation of the Friedmann Equations[1] from the Newtonian First Derivative of the Scale Factor a is the scale factor, not acceleration. Notice it is not expressed as a vector. The scale factor is scalar; It has no direction, only magnitude. It describes the instantaneous…
read moreVelocity tells you how fast an object is moving in a certain direction.
read moreAcceleration describes the rate of change of velocity with respect to time.
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