The phrase "are impossible to force" is correct and usable in written English.
It can be used when discussing situations, actions, or behaviors that cannot be compelled or made to happen against someone's will or natural inclination.
Example: "Certain emotions are impossible to force; they must come naturally for genuine expression."
Alternatives: "cannot be compelled" or "are not enforceable".
"That which it is impossible to force, it is impossible to hinder," the poem reads.
This being an international bureaucracy, it is impossible to force people off the payroll.
The Administration has warned that some of the Republicans' demands would be impossible to force on the I.M.F., which has 182 members.
"I express all my sympathy and regret for everything that happens in a country, any country, where there are deaths on construction sites, especially those related to World Cup," Blatter said, though he added that it was impossible to force change on Qatar.
Even so, students understand that knowing Arabic helps them to view life in Israel through the eyes of the Arabs….We thought about making Arabic compulsory for matriculation, but concluded that if less than 10percentnt of students learn it voluntarily, it would be impossible to force it on the rest.
It's impossible to force anyone to do something against their will.
Probability samples are theoretical - it is generally impossible to create a sampling frame that includes every single member of a population and it is impossible to force every randomly selected person to participate.
"It affects me every day because I feel like I could do something more to help her, even though I know I can't". Indeed, it's impossible to force people to seek help if they don't want it, but if your loved one decides to get healthy, your support can make a big difference.
It's impossible to force teens to be nice to each other, as every generation slogging their way through high school will testify to; but having to ask them not to encourage each other to kill themselves is both sad and frightening.
It is impossible to force anyone to love anyone else, even if they are a parent, a child or anything, just because they "should" as their role as a parent, or because they made an earlier promise of "no matter what".
