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Question

A constant 34.9-N force acts at an angle of 137^° with respect to the +x-axis on an object with mass 149 kg. If the object starts at the origin and is initially motionless, what are the x- and y-coordinates of its displacement 3.57 seconds later?

Answer 1

You can break up the force into components and do the x and y problems independently:

F vector is {F_x = Fcosθ, F_y = Fsinθ)

a vector is { a_x = F_x/m , a_y = F_y/m)

r vector is { (1/2)a_xt² , (1/2)a_yt²}

The two components of are the answers of the position vector are the answers.