/ˈriːzənəbl fɔːrs/ – Phrase
Definition: Sức mạnh hợp lý.
A more thorough explanation: 1. the amount of physical violence needed to do something
2. the amount of physical violence you need to protect yourself or your property
Example: 1. The Department of Education advises that reasonable force can be used to prevent pupils from hurting themselves.
2. We are each entitled to use reasonable force to defend ourselves from injury.