Recent content by metrocard

http://img693.imageshack.us/img693/9601/screenhunter002d.jpg What do I do now? I found the Force of Friction by doing Ff=uFn. 21*37.8=7.938 How do I find the speed? Do I use: (Vf)^2=(Vi)^2+2ad But then to find the Vf, I need the distance and acceleration. How do I find the distance and...

Homework Statement http://img687.imageshack.us/img687/8417/screenhunter002.jpg Homework Equations I don't know. The Attempt at a Solution I don't even know where to begin...