In this talk we show that the splashing of drops impacting over a solid substrate and the ejection of Worthington jets produced as a consequence of the collapse of a cavity can be described using the same theoretical framework. The results of the theory, which will be validated by comparison with experiments and numerical simulations reveal that, in contrast to what it is commonly believed, the jets produced after the bursting of bubbles, after the collapse of high amplitude Faraday waves, as a consequence of the collapse of the cavity produced after a solid impacts a free surface or after a cavitation bubble implodes in close proximity to a wall, emerge as a consequence of a common, purely inertial mechanism.