A 5.0-kg object is pulled along a horizontal surface at a constant speed by a 15-N force acting 20$\degree$ above the horizontal.How much work is done by this force as the object moves 6.0 m?
A)78 J
B)82 J
C)85 J
D)74 J
E)43 J

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The Answer of A 5.0-kg object is pulled along a horizontal surface at a constant speed by a 15-N force acting 20$\degree$ above the horizontal.How much work is done by this force as the object moves 6.0 m?
A)78 J
B)82 J
C)85 J
D)74 J
E)43 J

A 50-Kg Object Is Pulled Along a Horizontal Surface at a a Constant