Answer :
the acceleration for free fall is usually gravitational acceleration (g)
the free fall formula is
[tex] velocity squared = 2gs [/tex]
where s is the displacement whereas g is acceleration
Explanation:
taking g is 9.8m/s²
velocity squared= 2*9.8*15=294
velocity=17.15m/s
=17.15m/s
final answer
17.15