Answer:
For a catapult to launch a projectile a significant range, the projectile will need a large mass. To be able to launch a projectile that large, the machine itself would have to be very large and also very heavy. Also, the machine would be very inaccurate. It would be too difficult to know the exact location the projectile will hit. If you were to use a projectile that had a smaller mass, it would be effected by forces outside such as friction, wind, etc. The machine used to launch the projectile would have to be large and complex which would be inefficient.
Step-by-step explanation:
I just rephrased the persons answer above lol