Answer:
t = 1023.9 seconds
Step-by-step explanation:
Given that,
The average velocity of a Mustang, v = 33m/s
Distance, d = 21 miles = 33789 m
Let the driver takes t seconds. So,
Speed = distance/time
![t=(d)/(v)\\\\t=(33789)/(33)\\\\t=1023.9\ s](https://img.qammunity.org/2022/formulas/physics/college/s78j2o6773u7twxt2hv4wtkoz4vgie5yen.png)
So, it will take 1023.9 seconds to complete the course.