Emma's sensation of feeling like she could "keep on going" when the elevator stopped can be explained by the concept of inertia. Inertia is the tendency of an object to resist changes in its state of motion.
When Emma pressed the button for the first floor, the elevator started moving downward at a high speed. This sudden change in motion caused Emma to experience a sensation of being pushed downwards. As the elevator continued to accelerate towards the first floor, Emma would have felt a force pushing her against the floor of the elevator, similar to the feeling of being pressed into your seat when a car accelerates quickly.
When the elevator reached the first floor and came to a sudden stop, Emma's body, which was moving downward, wanted to continue moving due to its inertia. This is why she felt like she could "keep on going" even when the elevator stopped. Her body was still in motion, and it took a moment for her body to adjust to the change in motion and come to a rest.
In summary, Emma's sensation of feeling like she could "keep on going" when the elevator stopped is due to her body's inertia, which causes it to resist changes in motion.
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