Crow on roof Part C | Problem A 0.680 kg crow slides down an inclined roof, as shown in the figure. The roof makes an angle of 30.0 with respect to the horizontal. There is negligible friction between the roof and the crow. Use g = 9.80 m/s. Now repeat the above, but use a standard coordinate system: Again, determine the acceleration of the crow. O m/s m/s O < 4.90, 0> m/s > 30.0