Question

Five stones are dropped successively from a height of 50 m from the ground with a time interval of half a second between two successive stones. The relative velocity between the first and third stones when they are in motion is \[ (g=10~\text{m s}^{-2}) \]

• A. \(15~\text{m s}^{-1}\)
• B. \(5~\text{m s}^{-1}\)
• C. \(10~\text{m s}^{-1}\)
• D. \(20~\text{m s}^{-1}\)

Hint:

For bodies dropped at different times, \[ \boxed{ v_{\text{rel}}=g(\Delta t) } \] where \(\Delta t\) is the difference in release times.

Answer 1

The Correct Option is C