Final answer:
The car's average velocity is calculated by dividing the distance traveled by the time taken, which yields an average velocity of 20.0 km/h when traveling 70.0 kilometers in 3.5 hours towards Tennessee.
Step-by-step explanation:
The question is asking to determine the car's average velocity when it travels 70.0 kilometers in 3.5 hours. Average velocity is calculated using the formula:
Vavg = distance / time
To find the car's average velocity, we'll use the given distance of 70.0 kilometers and time of 3.5 hours. Plugging these values into the formula gives us:
Vavg = 70.0 km / 3.5 h = 20.0 km/h
Therefore, when the car travels 70.0 kilometers in 3.5 hours towards Tennessee, its average velocity is 20.0 kilometers per hour (km/h).