Answer:
12.31618 m/s
Explanation:
s = Displacement
t = Time taken
g = Acceleration due to gravity = 9.81 m/s² = a
[tex]s=ut+\frac{1}{2}at^2\\\Rightarrow 5.72=0t+\frac{1}{2}\times 9.81\times t^2\\\Rightarrow t=\sqrt{\frac{5.72\times 2}{9.81}}\\\Rightarrow t=1.07988\ s[/tex]
Velocity is given by
[tex]v=\dfrac{s}{t}\\\Rightarrow v=\dfrac{13.3}{1.07988}\\\Rightarrow v=12.31618\ m/s[/tex]
The initial velocity is 12.31618 m/s
