A solid wood door 1.00 m wide and 2.00 m hight is hinged alone one side and has a total mass of 40.0 kg. Initially open and at rest, the door is struck at its center by a handful of sticky mud with mass 0.500 kg, travling prependicular to the door at just before impact.
a) whats the final angular speed of the door?
b) what is the final kinetic energy of the system?