Get comprehensive solutions to your problems with IDNLearn.com. Get thorough and trustworthy answers to your queries from our extensive network of knowledgeable professionals.
Sagot :
Answer: 19,404 feet
Your teacher may want you to delete the comma.
===============================================================
Explanation:
Let's start with these facts
- 1 mile = 5280 ft
- 1 min = 60 sec
- 60 min = 3600 sec (multiply both sides by 60)
- 1 hour = 3600 sec
The main takeaways here are that 1 mile = 5280 ft and 1 hr = 3600 sec.
We'll use those two facts to then convert from mph to feet per second.
[tex]21 \text{ mph} = \frac{21 \text{ mi}}{1 \text{ hr}}*\frac{5280 \text{ ft}}{1 \text{ mi}}*\frac{1 \text{ hr}}{3600 \text{ sec}}\\\\\\21 \text{ mph} = 21*\frac{5280}{3600} \text{ ft per sec}\\\\\\21 \text{ mph} = 21*30.8 \text{ ft per sec}\\\\\\21 \text{ mph} = 646.8 \text{ ft per sec}\\\\\\[/tex]
This value is exact.
Since the bike is moving at exactly 646.8 ft per second, this means that after 30 seconds, the bike has traveled exactly 646.8*30 = 19,404 feet
I'm using the formula: distance = rate*time
Side note: 19,404 feet is exactly equal to 3.675 miles (divide by 5280 to convert from feet to miles).
Your participation means a lot to us. Keep sharing information and solutions. This community grows thanks to the amazing contributions from members like you. Thank you for visiting IDNLearn.com. We’re here to provide accurate and reliable answers, so visit us again soon.
