Answer:
13.1 m/s
Explanation:
If we assume that there is not air resistance then the horizontal component of velocity remains constant. That is 1.23 m/s
The vertical component of final velocity can be calculated the following way:
[tex]v_{yf} ^{2} =v_{yi}^{2} +2ax\\[/tex]
[tex]v_{yf} = \sqrt{1.23^{2}+2*9.81*8.60} = 13.0 m/s[/tex]
So the final velocity will be the square root of the sum of the squares of the component
v² = 1.23² + 13.0²
v = 13.1 m/s
