Does anyone know of a tool that can emulate the pointer inertia you'd find with a trackball, but on a trackpad? This way, you could 'launch' the pointer across

Does anyone know of a tool that can emulate the pointer inertia you'd find with a trackball, but on a trackpad? This way, you could 'launch' the pointer across the screen. As a long-time trackball user, I believe this feature would be incredibly useful.