Answer:After eight seconds of acceleration at 5 m/s2, the car will reach a final velocity of 40 m/s.The final velocity can be found using the kinematic equation below:vf = vi + a * tGiven:Initial Velocity (vi): 0 m/s.Acceleration (a): 5 m/s².Time (t): 8 seconds.Final Velocity (vf): ?Plugging in the Values:vf = 0 m/s + (5 m/s²) * (8 s)vf = 0 + 40 m/svf = 40 m/s