Disclosed herein are methods and systems for providing a user interface (UI) having a selector controllable by a physical input device. The response of the selector is adaptively adjusted to facilitate executing desired operations within the UI. A response factor defines how far the selector moves for a given movement of the physical input device. The response factor is increased so the selector can be moved a large distance, but is dynamically decreased to provide fine-tuned control of the selector for selecting densely grouped screen elements. Screen elements can be endowed with gravity, making them easy to select, or with anti-gravity, making them more difficult to select. The disclosure methods also provide tactile feedback such as vibration or braking of the physical input device to assist a user in executing desired operations.