A giraffe standing on top of a tall building has 470.4 kJ of gravitational potential energy. The mass of the giraffe is 800 kg and the gravitational field strength on Earth is 9.8 N/kg. Calculate the height of the building.

During a medieval siege of a castle, the attacking army uses a trebuchet to hurl heavy stones at the castle walls. if the trebuchet launches the stones with a velocity of at an angle of 50.0°, (a) how long does it take the stone to hit the ground? (b) what is the maximum distance that the trebuchet can be from the castle wall to be in range? (c) how high will the stones go? show all your work.