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2. A truck driving on a level highway is acted upon by the following forces: a downward gravitational force of 48 kN (kiloNewtons); an upward contact force due to the road of 48 kN; another contact force due to the road of 4.5 kN, directed east; and a drag force due to air resistance of 0.9 kN, directed west. What is the net force acting on the truck?

and in what direction is it moving?

3.Vector a has components ax = - 2.9 m/s2 and ay = + 4.1 m/s2.

(a) What is the magnitude of vector a?

____ m/s2

(b) What is the direction of vector a?

____ ° CCW from the +y-axis