Question

question 3 (3 points) (01.10 mc) a car travels 200 miles west for two hours. then it travels another 75 miles west for an additional hour. what is the average velocity of the entire trip?
○ a 91.7 mph west
○ b 138 mph west
○ c 325 mph west
○ d 475 mph west

Explanation:

Step1: Calculate total displacement

The car travels 200 miles west and then 75 miles west. Since both displacements are in the same direction (west), we add them.
Total displacement $d = 200 + 75 = 275$ miles west.

Step2: Calculate total time

The first part of the trip takes 2 hours and the second part takes 1 hour. So total time $t = 2 + 1 = 3$ hours.

Step3: Calculate average velocity

Average velocity $v_{avg}=\frac{\text{total displacement}}{\text{total time}}$. Substituting the values, we get $v_{avg}=\frac{275}{3}\approx91.7$ mph west.

Answer:

a. 91.7 mph west