Xiomara is standing inside a train that is moving at a constant speed. She tosses an apple straight up in the air. Where will the apple land relative to Xiomara, and why?

Respond very briefly.
The apple will land back in Xiomara's hand or close to where it was released. This happens because both Xiomara and the apple are moving at the same constant speed as the train. When she tosses the apple upwards, it retains the forward motion of the train. Since there is no additional force acting on the apple horizontally (assuming no air resistance inside the train), it continues to move horizontally at the same speed as the train and Xiomara, resulting in it coming down to the same spot from which it was tossed relative to the train and Xiomara.