Question

On Earth, two stones $A$ and $B$ are thrown vertically downwards from a same height at the same time. Which stone would reach the ground first? (Neglect air resistance)

• A. Stone $A$
• B. Stone $B$
• C. Stone $A$ and $B$ reach at same time
• D. Either stone $A$ or stone $B$

Answer 1

The correct option is C Stone $A$ and $B$ reach at same time

On Earth, acceleration due to gravity is given by:
$g=\frac{GM}{R^2}$
where,
G : Gravitational constant
M: Mass of Earth
R: Radius of Earth
Hence, acceleration due to gravity is independent of mass of body, same for all bodies on Earth. Therefore, both the stones will reach the ground simultaneously.