Law of Inertia: First law of motion

Aristotle believed that the natural tendency of objects is to rest, unless there is some external push on them to keep them moving. e.g. if you give a push to a swing, it continues for some time and gradually slows

Mass-Energy Equivalence

Equation #2 The famous equation by Einstein is not so easy to explain. Basically, it says that mass and energy are equivalent. For example, when the nucleus of Uranium-235 decays(breaks down) into two daughter nuclei, the sum of masses of