Final answer:
The number of assistants a physical therapist can supervise varies based on local regulations. Physical therapists are well-versed in the mechanics of body movements, requiring knowledge of physics contrary to common misconceptions.
Step-by-step explanation:
A physical therapist (PT) is a highly trained expert specializing in the mechanics of body movements and often works with individuals who have muscle or joint injuries. The exact number of assistants a physical therapist can supervise may vary by location and practice setting, and it is essential to consult the local regulations and licensing body for the most accurate information. However, it is a common misconception that physical therapists do not need knowledge of physics. Contrary to statements suggesting physical therapy is unscientific or purely social, physical therapists require a solid understanding of physics principles to analyze and influence the mechanics of human movement effectively.