It will ask you to input speed (I recommend 15) You can remix this project for the projectile code. If you want a certain speed and for it to not ask you, just delete the "ask" block and instead of "Set u to answer," change it to set u to... (I recommend 15). You can also change the angle by changing the block that points to mouse pointer.
I got this code from https://lms.chumbaka.asia/ (Chumbaka)