Question

when does an object have no kinetic energy? when its at rest. when it has no electrical charge. when its moving very slowly.

Explanation:

Kinetic energy is given by the formula \(K = \frac{1}{2}mv^{2}\), where \(m\) is the mass of the object and \(v\) is its velocity. If an object is at rest, its velocity \(v = 0\). Substituting \(v = 0\) into the formula gives \(K=\frac{1}{2}m\times0^{2}=0\). Electrical charge has no relation to kinetic energy. If an object is moving (even slowly), \(v
eq0\), so \(K
eq0\).

Answer:

When it's at rest.