4. A cannon is fired off the edge of a cliff. It is aimed at an angle of 10o above the horizontal. The barrel of the cannon is 2 m and it takes 0.3 s for the projectile to go from one end of the barrel to the other. Assuming it lands 250 m from the base of the cliff, find the following:

a)The velocity that the projectile left the barrel.

b) The total flight time of the projectile.

c) The height of the cliff.

d) The maximum height above the cliff that was reached by the projectile.