Physics

Mario Horn

9 February, 09:42

The coordinates of a bird flying in the xy-plane are given by x (t) = αt and y (t) = 3.0m-β t2, where α=2.4 m/s and β=1.2 m / s2.

a) Let the direction be the angle, that the vector makes with the + x-axis measured counterclockwise. Calculate the direction of the bird's velocity at t=2.0s. Express your answer in degrees using two significant figures.

b) Calculate the magnitude of the bird's acceleration at t=2.0s. Express your answer using two significant figures.