What does an object have when moving that it doesn't have when at rest?

Objects that are not moving have potential energy, which is converted to kinetic energy to enable motion, according to LiveScience. Potential energy becomes kinetic energy when work is performed on an object, such as pushing furniture across the floor.

Energy cannot be destroyed, so it is stored as potential energy in still objects until it can be used again. Kinetic energy is calculated by multiplying half of an object's mass by the squared value of its velocity, LiveScience states. "Work" measures the amount of force applied to an object over a specific distance. The mass of the object and any resistance in the immediate environment, such as ground friction, determine how much force must be exerted to produce motion. In summation, more work is required to move heavier objects, and performing work at a faster rate increases the buildup of kinetic energy.