Just for the need of it… plus our ancestors were hardcore, so why not?
-Arrow:
Average speed: 68.58 to 91.44 meters per second http://www.soarvalleyarchers.com/faqs/how-fast-can-an-arrow-travel/
Average weight: 18 grams normally
Kinetic energy: 33.8954 joules to 88.1282 joules https://www.goldtip.com/calculatorcontent.aspx?coid=1Arrows focus on piercing and not destroying, that’s why it is so low… it is obvious but still.
-Ballista projectile:
Average speed: 190 miles per hour according to Deadliest Warrior
Average weight: 26 kg https://en.wikipedia.org/wiki/Ballista
Kinetic energy: 104608.74045952 joules, aka Wall level. It might get lower or higher depending on the angle, but this value comes if the trajectory is straight http://www.csgnetwork.com/kineticenergycalc.html
-Cannonball:
Average speed: 100 to 250 meters per second https://www.wired.com/2011/12/cannon-balls-size-matters/
Average weight: From 4 lbs to 42 lbs http://www.arc.id.au/Cannonballs.html
Kinetic energy: For a 4 lbs one (9071.85 joules to 56699.06250000001 joules), for 12 lbs one (27215.550000000003 joules 170097.1875 joules). So, Wall level anyway if the trajectory is straight.
-Flintlock musket:
Average speed: 600 feet per second or 182.88 meters per second (thanks to Deadliest Warrior).
Average weight: 227.3217216 grams http://bearingballstore.com/index.php?main_page=page&id=6
Kinetic energy: 3801.398219041259 joules http://www.csgnetwork.com/kineticenergycalc.html