Average speed = (1/2) (beginning speed + ending speed)
= (1/2) ( 13 m/s + 30 m/s )
= (1/2) ( 43 m/s )
= 21.5 m/s
Given :
Initial velocity , u = 0 m/s .
Acceleration due to gravity on moon ,
.
Height , h = 2 m .
To Find :
Final position after falling for 1.5 seconds .
Solution :
We know , by equation of motion :

Here ,
.
So , equation will transform by :

Therefore , the height form moon's surface is 1.88 m .
Hence , this is the required solution .