Question

An Apple is dropped on the moon from a height of 2.0 meters. The acceleration of gravity on the moon is 1.67 m/s2. Determine the time for the feather to fall to the surface of the moon?

Answer 1

For a freely falling body, time of fall is given by

`t = sqrt((2h)/g)`

From above relation it is clear that time of fall is independent of mass of falling object.

So, time taken by feather to fall 2.0 m is

`t = sqrt(("2 × 2.0 m")/("1.67 m/s"^2)) = "1.5 s"`