Work done on projectile?

A projectile mass 0.22kg is shot from a cannon at height 6.6m with initial velocity vi having a horizontal component of 6.2 m/s and vertical component 6.6 m/s at 47 degrees. The projectile rises to a maximum height of 2.255 m above the end of the cannon's barrel and strikes the ground a horizontal distance x... show more A projectile mass 0.22kg is shot from a cannon at height 6.6m with initial velocity vi having a horizontal component of 6.2 m/s and vertical component 6.6 m/s at 47 degrees.
The projectile rises to a maximum height of 2.255 m above the end of the cannon's barrel and strikes the ground a horizontal distance x past the end of the cannon's barrel.

What is the work done by the gravitational force on the projectile during the motion of its trajectory? Answer is in J.

What is the magnitude of the velocity vector when the projectile hits the ground? Answer is in m/s.

What is the angle the projectile makes upon impact with ground with respect to the horizontal? Answer is in degrees.

What is the range (x) of the projectile? Answer is in meters.




Please, any help or advice is appreciated.
Update: I found the magnitude of the velocity vector upon impact with the ground to be 14.56 m/s, and the angle to be 64.797 degrees. I still do not know how to find the horizontal range and work done by gravitational force.
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