eli5. What does inertia mean?
In: Physics
It’s all due to energy. Velocity of mass means it has kinetic energy, one half the mass times velocity squared is the energy equation. A plate just sitting on a table has no kinetic energy. It’s going to stay there unless energy is applied to accelerate it (objects at rest tend to stay at rest). And now that it has kinetic energy we are going to have to take away that energy in order to stop it (objects in motion tend to stay in motion).
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