The amount of force required to knock a person off their feet depends on several factors, including the individual's weight, body position, stability, and the direction and nature of the applied force. It's important to note that the force required can vary significantly from person to person.
In general, to knock a person off their feet, you would need to exert a force greater than their ability to maintain balance and stability. The force required can range from a relatively low force, such as a strong push or shove, to a significantly higher force, such as a powerful strike or impact.
Factors such as the person's body position (e.g., whether they are standing with a wide base or on one foot), their preparedness for the force, and their ability to brace or resist the force can all influence the amount of force required.
It's also worth mentioning that intentionally trying to knock someone off their feet can be dangerous and potentially cause injury. It's essential to prioritize safety and avoid engaging in activities that could harm others.