Why do you fall back when an airplane takes off?

When an airplane takes off, it accelerates rapidly along the runway, creating a strong force that pushes passengers backward into their seats. This sensation is due to inertia, which is the tendency of objects to resist changes in motion. As the plane speeds up, your body wants to remain in its original state of rest, making you feel a backward push. Additionally, the thrust generated by the engines contributes to this force, enhancing the feeling of being pushed back.