Kid President - How To Change The World with Kindness. Teaching kindness to children is part of the fourth National Health Education Standards: Students will demonstrate the ability to use interpersonal communications skills to enhance health and avoid or reduce health risks. Learning to be kind helps build a positive learning environment.
The stone-throwers took two forms-either like the arrow-firing apparatus or large one-armed catapults, known in the 4th century CE as the onager or 'Wild Ass' because of its terrific recoil but, in fact, first appearing in the 2nd century CE.
Rating Newest Oldest. Best Answer: The main simple machine in a catapult is a lever. The lever is the arm of the catapult. Also if there are wheels on the bottom of the catapult to move it that too is a simple machine. If there are screws used to construct the catapult there is another simple machine.And lastly if there is a pulley system to pull the lever arm back to arm the catapult that is also a simple machine.Source(s):BMM Â· 6 years ago.f there are screws used to construct the catapult there is another simple machine. And lastly if there is a pulley system to pull the lever arm back to arm the catapult that is also a simple machine. Source(s): BMM Â· 6 years ago.