Question

Which is the same as 6 mph?

Answer 1

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❖ The correct answer choice is D) 31,680 ft/hr

1 mi = 5,280 ft

5,280 x 6 = 31,680 ft/hr

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Answer 2

Answer: D) 31,680 ft/hr

Step-by-step explanation:

We know that 1 mile= 5280 feet

Then, the 6 mph can be written as

$\dfrac{6\text{ miles}}{\text{ 1 hour}}=\dfrac{6\times5280\text{ feet}}{\text{ 1 hour}}\\\\=\dfrac{ 31,680\text{ feet}}{\text{ 1 hour}}=31,680\text{ ft/hr}$

1 hour = 60 minutes

1 minute = 60 seconds

Then, $\text{1 hour}=60\times60=3600\text{ seconds}$

Then, the 6 mph can be written as

$\dfrac{6\text{ miles}}{\text{ 1 hour}}=\dfrac{6\times5280\text{ feet}}{1\times3600\text{ seconds}}\\\\=\dfrac{ 8.8\text{ feet}}{\text{ 1 seconds}}=8.8\text{ ft/sec}$

Hence, the correct answer is  D) 31,680 ft/hr