This activity helps demonstrate some of the unbalanced forces, namely gravity and air resistance, that affect us every day. Students should predict why paper airplanes do not stay in the air forever. After testing their paper airplane, they should create a force diagram and answer some questions regarding these unbalanced forces.
Materials needed: paper, meter stick
Main topics: unbalanced forces, gravity, air resistance (friction).
Quick, easy, and effective in demonstrating gravity and