Well, her experiment is supposed to be a demonstration about 'moment', as in the moment in physics term. How does a Chinese teacher live with a Physics teacher?? I think it's an agony for me, when she starts speaking in her 'physics' language, force..blah blah blah..newton's law..blah blah blah.. Boring!! Well well, physics teacher also feels bored and damn stressed up when dealing with her subject matter. I can see her bedtime coming whenever she starts doing her physics stuff.. muahahhahah