Solve the all parts of given question:
Question: An object is fired at 30 m/s at an angle of 35 degrees from a vertical cliff that is h meters (where h is an unknown quantity) above the sea. It is observed to hit the water 4.5 seconds after it was fired.
Part A: Calculate h, the height of the cliff?
Part B: Calculate the velocity vector of the object in polar form when it hits the water?
I want help to find the velocity vector of the object in polar form when it hits the water.