Final answer:
The type of projectile motion problem studied in physics is determined by the launch angle, initial velocity, and air resistance.
Step-by-step explanation:
The type of projectile motion problem studied in physics is determined by all of the above: launch angle, initial velocity, and air resistance.
The launch angle refers to the angle at which the projectile is launched. This affects the path and trajectory of the projectile. The initial velocity is the speed at which the projectile is launched. The magnitude and direction of the initial velocity determine the range and height the projectile reaches. Lastly, air resistance is the frictional force that opposes the motion of the projectile and can affect its path and speed.