I think you need to add more.. but I may know where you are leading
Was he 200 m away and made the trip in 200 seconds?
If yes...
2 m/s was his speed and 0 velocity
Mechanical advantage allows you to apply a force over a short distance to increase the distance and object moves.
Answer:
12m/s
Explanation:

Let's call the velocity that the car maintains for 10 seconds
, and the final velocity
.

Hope this helps!
F-free = m*g - F_air = m*a
F_air = 1.2 * m
a= (105 kg * 9.8 m.s^2 - 5*105) / 105 kg
a = 9.3 m/s
Hope this helps