Final answer:
The car's acceleration was 2.5 m/s².
Step-by-step explanation:
The car's acceleration can be calculated using the equation:
a = (v - u) / t
Where:
- a is the acceleration
- v is the final velocity
- u is the initial velocity
- t is the time
Substituting the given values:
a = (30 m/s - 5 m/s) / 10s = 25 m/s / 10s = 2.5 m/s²
Therefore, the car's acceleration was 2.5 m/s².