Multiple choice

An iron ball and a wooden ball fall simultaneously from a height h. If the viscosity of the air is negligible, which ball will hit the ground first?

  1. Iron ball

  2. Wooden ball

  3. Both will hit the ground at the same time

  4. It depends on some other factors also
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

In the absence of air resistance (negligible viscosity), all objects fall with the same acceleration due to gravity regardless of their mass. This is a consequence of Galileo's principle and Newton's second law: a = F/m = mg/m = g. Both balls will hit the ground simultaneously when dropped from the same height.

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