Answer:
His final velocity is 15.8 m/s.
Step-by-step explanation:
Given:
Initial velocity of the driver is,  m/s
 m/s
Acceleration of the driver is,  m/s²
 m/s²
Time taken to reach final velocity is,  s.
 s.
The final velocity is given using the Newton's equations of motion as:
 , where,
, where,  is the final velocity.
 is the final velocity.
Now, plug in the given values and solve for  .
.

Therefore, his final velocity is 15.8 m/s.