Relativistic Energy

[@user-zj8fg7ch6p]

Very Helpful!!!

[@joeboxter3635]

@2:24 you say you will differentiate by parts, that's not the proper terminology. It's differentiation by product rule. There is something called integration by parts, but there is no such thing as differentiation by parts. The closest to this would be partial (by parts) derivatives, but this is given the simple name partial derivative.

[@Joselo09111]

Fantastic video

[@eien7228]

guys can u tell me why we can assume v1 = 0? ithought its not accelerating?

[@UNSWPhysics]

If it is not accelerating then the kinetic energy remains the same so the change in kinetic energy is 0. Newton's first law tells us that if there is an external force acting on the object, which there must be if the net work is non-zero, then the velocity of the object must be changing, hence it must be accelerating.

[@fratkurt4066]

well thanks

[@ericsu4667]

E is not mc2. Two Eurpean synchrotrons use experimental data to prove that energy is not mc2. Detail in ™83 Representation of Energy in Synchrotron™ on sites.google.com/view/physics-news/home/updates