physics help please (coefficients of friction)?
i pretty much have the entire chapter down but i can't figure out his part
a 1000 N crate is being pushed across a level floor at a constant speed by a force of 300N at an angle of 20 degrees below the horizontal (such as someone is pushing it from behind, at a downward angle) what is the coefficient of kinetic friction between the crate and the floor?
i don't need an answer as much as i just need to be shown how to do it