Answer:
It took 2.93 s

Step-by-step explanation:
the speed has 2 components in x and in y
v0,y = 0
v0,x = unknown
distance in y = 42 m
distance in x = 72 m
Y:
The car fell 42 m with an initial speed of 0 m/s, gravitational acceleration 9.8 m/s^2
With that information you can calculate the final speed at the moment of impact

I put a minus because it says upward is positive and the speed direction is downward.