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**A thin, uniform, rectangular sign hangs vertically above the door of a shop. The sign is hinged to a stationary horizontal rod along its top edge. The mass of the sign is 2.40 kg and its vertical dimension is 45.0 cm. The sign is swinging without friction, becoming a tempting target for children armed with snowballs. The maximum angular displacement of the sign is 25.0° on both sides of the vertical. At a moment when the sign is vertical and moving to the left, a snowball of mass 520 g, traveling horizontally with a velocity of 160 cm/s to the right, strikes perpendicularly the lower edge of the sign and sticks there.**

(a) Calculate the angular speed of the sign immediately before the impact

(a) Calculate the angular speed of the sign immediately before the impact

I have absolutely no clue on how to the w. If anyone can please enlighten me, it would be greatly appreciated. Thanks

Kevin