Kinetic energy can never be ____.

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Detailed Solution

Kinetic energy can never be negative.
Kinetic energy can only have a net positive charge. This is due to the fact that kinetic energy is calculated as the product of an object's mass divided by its squared velocity. Since mass is a measure of matter, it can never be negative, and since velocity is squared, it can never be negative. As we all know, velocity may be both positive and negative.
We already know that

K . E = \frac{1}{2} m v^{2}

Kinetic energy is a scalar quantity, but velocity is a vector quantity. Kinetic energy is defined
as the energy that a body generates as a result of motion. It makes no difference
whether the body is travelling in a positive or negative direction. It is solely determined by the magnitude of the velocity. As a result, kinetic energy is never negative.

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