I need it written please the acceleration due to gravity is 8 m/s^2vnot 9.81 m/s^2

For this question, use your personal value for the acceleration due to gravity, g m/s? calculated above. A cannonball is fired (at t = () on level ground at an angle of 30 above the horizontal. (a) Assuming the cannonball is fired at 50 m/s, find the velocity and position of the cannonball as a function of time, in vector form. (b) Hence, assuming the cannonball is fired at 50 m/s, find the the maxi- mum height of the cannonball, and the range of the cannonball (i.e. how far does it travel before it hits the ground?). (c) s Now assume the cannonball is fired with initial speed of u m/s (still at 30 above the horizontal). What should the value of u be so that the cannonball hits a target 150 m away horizontally and 20 m above the ground? (i.e. the target is at position 150i + 20j m away from the cannon)