West Coast EMT Block 4 Exam Study Guide (Rated A) Know what cavitation is - Results from rapid changes in tissue and fluid pressure that occur with the passage of the projectile, can result in serious injury to internal organs distant to the actual path of the bullet. Know Newton's First Law of Motion - The first law states that objects at rest tend to stay at rest and objects in motion tend to stay in motion unless acted upon by an outside force. Kinetic Energy - The energy of a moving object. Reflects the relationship between the mass (weight) of the object and the velocity (speed) at which it is traveling. Potential Energy - The product of mass (weight), force of gravity, and height and is mostly associated with the energy of falling objects. The energy stored within an object. Know the 3 collisions that occur in a car accident. First Collision: - The collision of the car against another car, a tree, or other objects. Does not directly affect patient care except making extrication difficult The damage to the car can indicate how severe the patient's injury is and help determine the mechanism of injury. Know the 3