Answer:
t = 6.15 [s]
Explanation:
To solve this problem we must use the following equation of kinematics.
[tex]v_{f}=v_{o}-a*t[/tex]
where:
Vf = final velocity = 0 (the plane comes to stop)
Vo = initial velocity = 24 [m/s]
a = desacceleration = 3.9 [m/s²]
t = time [s]
Note: The negative sign of the acceleration means that the plane is decreasing its velocity.
[tex]0=24-3.9*t\\3.9*t = 24\\t = 6.15[s][/tex]
