The answer is 1. 4 is incorrect because you can't really decrease the mass of the driver. 3 is incorrect because accelerating the driver would cause more damage than not. 2 is incorrect because decreasing the distance would only cause more damage. 1 is correct because by increasing the length of time the force acts on the driver helps reduce the speed of the driver and cause the drive to sustain less injuries. Hope that helps.
Answer:


Explanation:
v = Final velocity
u = Initial velocity
a = Acceleration
t = Time
s = Displacement
Here the kinematic equations of motion are used

Time the car is at constant velocity is 39 s
Time the car is decelerating is 5 s
Total time the car is in motion is 
Distance traveled




The total displacement of the car is 
Average velocity is given by

The average velocity of the car is
.
The answer would be that the plane would move upward and to the right! Hope this helps, message me if you need more help!
~PLUTO100
Here's the 'vector equation' for that situation:
(10N right) + (3N left)
= (10N right) + (-3N right)
= 7N right .