Question

An unsuspecting bird is coasting along in an easterly direction at 4.00 mph when a strong wind from the south imparts a constant acceleration of 0.400 m/s2. If the acceleration from the wind lasts for 3.80 s, find the magnitude, r, and direction, θ, of the bird's displacement during this time period. (HINT: assume the bird is originally travelling in the x direction and there are 1609 m in 1 mile.)