Could you please answer to the question which I post below with the clear and specific working process that units must include in all equations. Thank you so much and could you please answer to the question asap? Thanks!!

2. A mediaeval 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 19.2 m/s [42 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 S 420 (b) width of the moat (c) velocity at impact 9.5 m . . . moat