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31 August, 10:45

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.

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  1. 31 August, 10:47
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    Magnitude of accel = 2.4m/s2

    angle 296.57 degrees, sry I'm new, how do I know if I'm right or not
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