Respuesta :
Given
This is a free fall problem where we have information about the mass, initial velocity and initial height of the object.
m = 2.2 kg
h = 42m
g = 9.8m/s2
vo = 0 m/s
The data given were: mass, height, initial velocity and gravity, which is already known.
Procedure
to solve this problem we rely on the free fall equations as follows.
[tex]\begin{gathered} v_f^2=v_o^2+2gh \\ v_f=\sqrt{2gh} \end{gathered}[/tex]This equation relates the final velocity to the initial velocity, gravity and height.
Using the above equation and replacing the values we can proceed to calculate.
[tex]\begin{gathered} v_f=\sqrt{2*\frac{9.8m}{s^2}*42m} \\ v_f=28.7m/s \end{gathered}[/tex]The final velocity would be 28.7 m/s
