Dr. Jeff is explaining the first part of a question while Dr. Jef is in the background yelling while a bike can be seen near Dr. Jef
Mechanical Energy In physical sciences, mechanical energy is the sum of potential energy and kinetic energy. It is the macroscopic energy associated with a system. The principle of conservation of mechanical energy states that if an isolated system is subject only to conservative forces, then the mechanical energy is constant.
Dr. Jeff and Dr. Jef are driving from an, angry mob?
Wheels and axles Wheels and axles are used to help with transportation or sometimes used for other things, for example, planes, cars and bikes all use wheels and axles, and so do ferris wheels. Above are also a few examples.
Dr. Jeff finishes the question while Dr. Jef and Santa Claus are chatting behind him.
YOU HIT THE POOR BIKER!!!
The explanation of mechanical energy.
The explanation of a wheel and axle.
Dr. Jeff and Dr. Jef are driving while they accidentally hit an ongoing bicyclist.