A rocket enters the range of a radar system mid-flight. It is tracked at the radar station, where its altitude is plotted as a function of the time since its initialdetection as shown in the graph below Rocket Trajectory
1 2 3 4 5 6 7 8 9 10
Time minutes)
According to this model, how many minutes elapsed between the time the rocket was launched from the ground before and when it was detected by the radar system? Assume the rocket follows a parabolic trajectory
A4 minutes
B 6 minutes
C 8 minutes
D
2 minutes