A 50-N Force Is Applied to a Crate on a Horizontal

Multiple Choice

A 50-N force is applied to a crate on a horizontal rough floor, causing it to move horizontally.If the coefficient of kinetic friction is 0.50, in what direction should the force be applied to obtain the greatest acceleration?

A) Horizontal
B) 60°above the horizontal
C) 30° above the horizontal
D) 27° above the horizontal
E) 30° below the horizontal