if there was a fire and your son was with you and said can I help by pulling the fire alarm what would you say? Would you go outside with your son to help him pull the fire alarm if he said can you go with me? How would you help your son with the process like breaking the glass or if the alarm had more than one direction and your son wanted to learn and said could we do it together like pull the handle down? How would you help in this situation while letting your son do it if he said I think it would get it done quicker if you explained how to do it?
Usually there is a provision that allows them to enter for emergencies such as a leak or a fire. My old apartment had to serve me 24 hour notice if they would enter for a non-emergency. I would inform him that you know he entered the apartment and ask why. If it's legit, let it go. If not, tell him to serve you written 24 hour notice or you will file a complaint against him. It should stop there.
Use the range formula and take half of the range, where the projectile will be at the peak. range of object projected at an angle θ R (V?/g)sin(2θ), V is initial velocity in m/s g is the acceleration of gravity 9.8 m/s? .
