Help on the whole page.. or explanation on how I can do it myself

Work, Energy, and Power Name: 8. W = FX ) The following descriptions and their accompanying free-body diagrams show the forces acting upon an object. For each case, calculate the work done by these forces; use the format of force . displacement . cosine(). Finally, calculate the total work done by all forces. Free-Body Diagram Forces Doing Work on the Object a. A 7 .N force is applied to push a Amount of Work Done by Each Force block across a frictionless surface for a displacement of 5.0 m to the right. Wnorm = 20N .5.0m - cos( 90) =_ Fnorm=20 N Wapp = ZN . 5.0m . cos( 0 ) = 35 Fapp = 7 N Wgrav = 20N . 50 . cos( 90) =0 200 Wtotal = 3b Fgray =20 N b. A 10-N frictional force slows a moving block to a stop along a horizontal surface after a displacement Wnorm = = 3N . 50m - cos( 40 ) = of 5.0 m to the right. Wgrav = . cos ( 90 )= [Fnorm= 3 N Wfrict = . cost J = Ffrict = 10 N Wtotal = Fgray = 3 N C. A 25N forces is applied to push a block across a frictional surface at Wnorm = 20 . . cost )= constant speed for a displacement of m to the right. Wapp = . cost Fnorm=20 N Wgrav = cos ) = Ffrict 25 N Fapp= 25 N Wfrict = . cos = Wtotal = Fgray=20 N d. A 2-kg object is sliding at constant speed across a frictionless surface for a displacement of | 2 m to the right. Wnorm = . cost = Fnorm=20 N Wgrav = . cos = Wtotal = Fgray =20 N Pa he Physics Classroom, 2020