Answer:
The time required for the plane to slow down from the moment it touches the ground is 20 seconds.
Explanation:
t = Time taken for jet to stop
u = Initial velocity = 100 m/s
v = Final velocity = 0
s = Displacement
a = Acceleration = -5.00 m/s² (slowing down)
Equation of motion
[tex]v=u+at\\\Rightarrow t=\frac{v-u}{a}\\\Rightarrow t=\frac{0-100}{-5}\\\Rightarrow t=20\ s[/tex]
The time required for the plane to slow down from the moment it touches the ground is 20 seconds.
