**(a)**

2D vector direction:

$\overline{){\mathbf{tan}}{\mathit{\theta}}{\mathbf{=}}\frac{{\mathit{F}}_{\mathit{y}}}{{\mathit{F}}_{\mathit{x}}}}$

Three forces acting on an object are given by F_{1} = (1.85i - 1.60j) N, F_{2} = (5.20i - 2.50j) N, and F_{3} = (40.5i - 48.0j) N. Theobject experiences an acceleration of magnitude 3.75 m/s^{2}.

(a) What is the direction of the acceleration?

___ ° (from the positive *x-axis*)

(b) What is the mass of the object?

___ kg

(c) If the object is initially at rest, what is its speed after 16.0 s?

___ m/s

(d) What are the velocity components of the object after 16.0 s?

( __ i +__ j ) m/s

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