Question

Two objects A and B of mass $40\text{kg}$ and $400\text{kg}$ respectively are dropped together from a same height. If A reaches the ground in $20\text{s}$, then how much time will B take to reach the ground?

• A. $2\text{s}$
• B. $20\text{s}$
• C. $5\text{s}$
• D. $10\text{s}$

Answer 1

The correct option is B $20\text{s}$

$20\text{s}$

Motion of an object under gravity is independent of its mass.