20 August, 01:00
An object that has kinetic energy must what?
20 August, 01:04
An object that has kinetic energy must be moving.
The formula for an object's kinetic energy is
KE = (1/2) · (the object's mass) · (the object's speed) ²
As you can see from the formula, if the object has no speed, then its kinetic energy is zero. That's why kinetic energy is usually called the "energy of motion", and if an object HAS kinetic energy, then that tells you right away that it must be moving.
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