Forces, Gravity, and Newton's Laws

When you attempt to move a bariatric patient resting in a hospital bed, the profound resistance you feel is not a biological phenomenon, but a purely physical one. The interactions governing the patient's stillness, the effort required to initiate movement, and the continuous push needed to overcome the friction of the stretcher’s wheels are dictated by immutable laws of motion. In healthcare, a foundational understanding of forces, mass, and acceleration is not merely an academic hurdle for the HESI A2; it is the mechanical reality of patient transport, biomechanics, and physiological fluid dynamics. To master this module, we must strip away our intuition about how things appear to move and look strictly at the underlying rules of the physical universe.