Question

Imagine that you took a road trip. based on the information in the table, what was the average speed of your car? time mile marker 3:00 pm 38 8:00 pm 219 express your answer to three significant figures and include the appropriate units. use mi as an abbreviation for miles, and h for hours, or mph can be used to indicate miles per hour.

Answer 1

The average speed can be calculated using the formula:

`v= (\Delta S)/(\Delta t)`
where
`\Delta S` is the distance covered and
`\Delta t` the time between the initial and final point of the motion. In our problem, the distance covered is

`\Delta S = (219-38)~mi = 181~mi`
While the time is the number of hours between 8:00 pm and 3:00 pm, so 5 hours.
Therefore, the average speed is

`v= (\Delta S)/(\Delta t) =(181~mi)/(5~h) = 36.2~mph`