Question

An iron ball and a wooden ball of the same radius are released from the same height in vacuum. The times taken by both of them to reach the grounds are

• A. exactly equal
• B. roughly equal
• C. unequal
• D. nothing can be decided

Answer 1

The correct option is A exactly equal

In the free fall time of the motion:

$T=\sqrt{2gh}$

In vacuum there is no effect of the gravity it only depends on the height. That means according to formula it takes exactly same time to reach the ground.