"Mr Mcgoo pulls a sled with several children on it at a constant speed. If he pulls with a force of 329.461 N at an angle of 17° above the horizontal, what is the force of friction on the sled?" Not sure if i even drew the picture right(is it like a triangle, but it doesn't say hill, don't understand the whole "horizontal" thing), but i cant figure how to solve this. I drew a picture(which may have been incorrect) and identified the Fρ(parallel force) as being 329.461 N and i need to find Ff. I also have the knowledge that Ff is the equal and opposite of Fρ.