1. The problem statement, all variables and given/known data What is the work done by the two forces together in moving an object a distance of d = 9 m as shown in the diagram? The magnitude of each force is 21 N. There is a picture that comes with this http://capa-new.colorado.edu/teacher/capalibrary/Graphics/Gtype12/prob39.gif 2. Relevant equations So i know that W==Fnet*d but i am unsure of how to do it with two angles. i also know that work can be found by W=Fcos(theta)d and i have tried both and neither seem to work. I also have a second question that is similar With brakes fully applied, a 1430 kg car deccelerates from a speed of 83.0 km/hr. What is the work done by the braking force in bringing the car to a stop? So the way i tried to find this was by doing W=mad and that came up as wrong. and a second part to that question is What is the change in kinetic energy of the car I know that KEI+PEI=KEF+PEF so would i just do 1.2mvsquared to find the KEF?