Multiple choice

Which falls down faster in a vacuum a feather, a wooden ball or a steel ball?

  1. A wooden ball

  2. A feather

  3. A steel ball

  4. All will fall at the same speed.

Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In a vacuum, air resistance is absent. According to Galileo's principle, all objects accelerate at the same rate due to gravity regardless of their mass. A feather, wooden ball, and steel ball will all fall with identical acceleration and hit the ground simultaneously.