Answer:
option C
Explanation:
given,
height of the hammer, h = 2 m
acceleration due to gravity of the moon, g = 1.62 m/s²
time taken by the hammer to reach at bottom = ?
initial speed of the hammer, u = 0 m/s
using equation of motion for the time calculation


t² = 2.469
t = 1.57 s ≅ 1.6 s
hence, the time taken by the hammer to reach the bottom is equal to 1.6 s.
The correct answer is option C