## Related questions with answers

The greatest speed limit in the United States is along the tolled section of Texas State Highway 130 where the limit is $85 \mathrm{mi} / \mathrm{h}$. How much time would be saved in driving that $41 \mathrm{mi}$ section at the speed limit instead of $60 \mathrm{mi} / \mathrm{h}$ ? (b) The speed limit in residential areas is commonly $25 \mathrm{mi} / \mathrm{h}$ but some motorists drive at an average speed of $45 \mathrm{mi} / \mathrm{h}$, perhaps by weaving through traffic and even driving through traffic lights that had just turned red. How much time would be saved in driving at that faster speed through $5.5 \mathrm{mi}$ instead of the posted speed limit if the car does not stop at any intersections?

Solution

Verified### Information

$a)$ Determine time saved if at a section of a road of $41$ mi we change the speed limit from $60$ mi/h to $85$ mi/h.

- $v_1=60$ mi/h
- $v_2=85$ mi/h
- $\Delta x=41$ mi

$b)$ Determine time saved if at a section of a road of $5.5$ mi we change the speed limit from $25$ mi/h to $45$ mi/h.

- $v_1=25$ mi/h
- $v_2=45$ mi/h
- $\Delta x=5.5$ mi

## Create a free account to view solutions

## Create a free account to view solutions

## Recommended textbook solutions

#### Physics for Scientists and Engineers: A Strategic Approach with Modern Physics

4th Edition•ISBN: 9780133942651 (8 more)Randall D. Knight#### Mathematical Methods in the Physical Sciences

3rd Edition•ISBN: 9780471198260 (1 more)Mary L. Boas#### Fundamentals of Physics

10th Edition•ISBN: 9781118230718 (3 more)David Halliday, Jearl Walker, Robert Resnick#### Fundamentals of Physics

12th Edition•ISBN: 9781119801146David Halliday, Jearl Walker, Robert Resnick## More related questions

1/4

1/7