A student decides to move a box of books into her dormitory room by pulling on a rope attached to the box. She pulls with a force of 138.0 N at an angle of 19.0° above the horizontal. The box has a mass of 25.0 kg, and the coefficient of kinetic friction between box and floor is 0.300. (a) Find the acceleration of the box.  m/s2 up the incline (b) The student now starts moving the box up a 10.0° incline, keeping her 138.0 N force directed at 19.0° above the line of the incline. If the coefficient of friction is unchanged, what is the new acceleration of the box?  m/s2 up the incline

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Newton's Second Law

Newton’s laws of motion describe the relationship between the motion of an object and forces acting on it. Newton’s law of motion has two types as follows: