Two workers must slide a crate designed to be pushed and pulled at the same time as shown in the figure below. Joe can always exert twice as much force as Paul, and Paul can exert 155 N of force. The crate has a mass m = 41 kg, the angle θ = 20° and the coefficient of kinetic friction between the floor and crate is 0.55. http://s783.photobucket.com/albums/yy113/eandronic/?action=view¤t=4-p-073.gif If we want to move the crate as fast as possible, is it better to have Paul push and Joe pull, or vice-versa? Intuitively, I consider it's better to have Paul push, and Joe pull. Calculate the (horizontal) acceleration for both cases to find out. Paul pushing m/s2 ? Joe pushing m/s2 ? I am not sure which are all the forces on the x axis acting on the crate and how to calculate them at the given angle?