Given that a projectile is fired at an angle theta to the horizontal with initial velocity U. If g=acceleration due to gravity find the expression for the horizontal distance X and the vertical height H travelled after a time T.​

I'm having some difficulty seeing the diagram clearly.but the question says there's a net inward force on the object.so we know right away,  from newton's 2nd law of motion, thatthat baby is accelerating.  it doesn't even matter which way thenet force is pointing.  if there's any net force, then either theobject's speed or else its direction must be changing.