Part D Application [20 marks] 15. A medieval prince trapped in a castle wraps a message around a rock and throws it from the top of the castle wall with an initial velocity of 32.7 m/s [420 above the horizontal]. The rock lands just on the far side of the castle's moat, at a level 9.5 m below the initial level. Determine the rock's (a) time of flight [5] (b) width of the moat[2] (c) velocity at impact [3] 9.5 m moat