The coordinates of a bird flying in the xy-plane are given by x(t) = αt and y(t) = 3.0 m − βt2, where α = 2.4 m/s and β = 1.2 m/s2. (a) Sketch the path of the bird between t = 0 and t = 2.0 s.

(II) Graphically determine the resultant of the following three vector displacements: 

(3) 26 m, 33° west of south.

(II) An airplane is traveling 815 km/h in a direction 41.5° west of north (Fig. 3–40). 

(b) How far north and how far west has the plane traveled after 1.75 h? 

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(I) A delivery truck travels 21 blocks north, 16 blocks east, and 26 blocks south. What is its final displacement from the origin? Assume the blocks are equal length.