Question

A stone dropped from the window of a stationary railway carriage takes 2 seconds to reach the ground. In what time the stone will reach the ground when the carriage is moving with

(a) constant of 80 kmh^-1 .

(b) constant acceleration of 2 m^-1?

Answer 1

The taken by the freely falling stone to reach the ground is given by

\(t=\frac{2h}{g}\)

In both cases, the stone will fall through the same height as it is falling when the railway carriage is stationary. Hence, the stone will reach the ground after 2 seconds.