Why do frontal lobes matter?

The plum pudding model of the atom state that ?

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.

The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.