UNIT: CATAPULT

ACT-Based Writing: Writing a Technical Explanation of a Catapult’s Mechanics Answer Key

ACT-STYLE QUESTION:

Which of the following revisions best improves clarity in a technical explanation of catapult motion?

"A catapult moves when you release the arm, sending stuff flying far."

"Upon release, stored potential energy in the catapult arm converts into kinetic energy, propelling the projectile forward."

"If you let go, the object will go forward because of energy."

"The arm goes down and then up, launching the object using physics."

(Correct Answer: B)