What type of injury occurs when the body is struck forcefully by an object?

An impact injury occurs when the body is struck forcefully by an object, leading to direct trauma to the affected area. This type of injury typically involves bruises, fractures, or contusions, depending on the severity and nature of the impact. The mechanism of the injury directly correlates with the force of the object striking the body, which can result in immediate physical damage to tissues, muscles, bones, or organs.

The other types of injuries listed do not fit this definition. Noise-induced injury relates to hearing damage from excessive noise exposure, which is unrelated to physical impact. A burn injury results from thermal, chemical, or electrical sources causing damage to skin and tissue, rather than being caused by a striking object. Repetitive strain injuries arise from repetitive movements over time, leading to chronic conditions in muscles and tendons, rather than acute trauma. Thus, in the context of injuries resulting from forceful strikes, the categorization of impact injury is the most accurate choice.