Answer:
22.93 seconds
Explanation:
s = Displacement = 3000 - 420 = 2580 m = The distance she will free fall
a = Acceleration due to gravity = 9.81 m/s²
u = Initial velocity = 0
v = Final velocity
t = Time taken
Equation of motion
[tex]s=ut+\frac{1}{2}at^2\\\Rightarrow 2580=0\times t+\frac{1}{2}\times 9.81\times t^2\\\Rightarrow t=\sqrt{\frac{2580\times 2}{9.81}}\\\Rightarrow t=22.93\ s[/tex]
Time taken by the skydiver to cover the distance between 3000 m to an altitude of 420 m neglecting air resistance is 22.93 seconds
