Complete Question
An astronaut stands by the rim of a crater on the moon, where the acceleration of gravity is 1.62 m/s2. To determine the depth of the crater, she drops a rock and measures the time it takes for it
to hit the bottom. If the time is 6.3 s, what is the depth of the crater?
Answer:
The depth is 32 m
Explanation:
From the question we are told that
 The  time is  t =  6.3 s
 The acceleration due to gravity is  [tex]g =  1.62 \  m/s^2[/tex]
Â
Generally from kinematic equation
  [tex]s = ut + \frac{1}{2}  - at^2[/tex]
Here the u is the initial  velocity and the value is  0 m/s
   [tex]s = 0 + \frac{1}{2}  - (1.62) * (6.3)^2[/tex]
    [tex]s = 32 \ m [/tex]
 Â
