Answer:
33.1 m/s
Step-by-step explanation:
where v is final velocity of the car
is initial velocity of the car, a is acceleration due to gravity and t is time taken by the car. The final velocity is the velocity at the end of acceleration.
In this question,
= =5.5m/s, t=23 seconds, a=

Substituting the above figures into the equation we obtain
v=5.5+(1.2*23)=33.1 m/s
Therefore, the velocity of the car at the end is 33.1m/s