Final answer:
Without the mass of the glass, it is not possible to calculate the kinetic energy just before it hits the ground, as the mass is an essential variable in the kinetic energy formula.
Step-by-step explanation:
The question posed involves calculating the kinetic energy of a glass that a bartender slides. To calculate kinetic energy, we use the formula K = 0.5 × m × v^2, where K is the kinetic energy, m is the mass of the object, and v is its velocity. However, to solve this problem, we need the mass of the glass, which is not provided in the question. As mass is a crucial component to calculate kinetic energy, it is impossible to accurately determine the answer without this information. Therefore, a key piece of data is missing, and we cannot solve for kinetic energy without it.