Question

An iron ball and a wooden ball of the same radius are released from a height ‘h’ in vacuum. The time taken by both of them to reach the ground is

• A. Unequal
• B. Exactly equal
• C. Roughly equal
• D. Zero

Answer 1

Answer: (B)

Exactly equal

Answer 2

Time of decent $t = \sqrt { \frac { 2 h } { g } }$ . In vacuum no other force works except gravity so time period will be exactly equal.