Your eyes see the inside of a car and it doesn't seem to be moving.

Your eyes are seeing the inside of a vehicle,which doesn't seem to be moving.Meanwhile, your ear is telling your brain you're accelerating.Wait, your ear?Your ear has another important function besides hearing.In its innermost part lies a group of structures known as the vestibular system,which gives us our sense of balance and movement.Inside there are three semicircular tubules that can sense rotation,one for each dimension of space.And there are also two hair-lined sacks filled with fluid.