Question

Philip ran a sprint of two hundred feet in twenty-two seconds. At what speed was Philip running in miles per hour? (1 mile = 5280 feet). Round to the nearest tenth

Answer 1

6.2 miles per hour

Explanation:

Given: Philip ran 200 feet.

Time taken is 22 seconds.

First lets find out speed of Philip.

Speed=
`(distance)/(time)`

∴ Speed=
`(200)/(22) \ ft/sec`

Speed= 9.09 ft/sec.

Now, converting speed feet per second to miles per hours.

Remember, 1 miles= 5280 ft and 1 hours= 3600 seconds.

∴ Speed in miles per hour=
`9.09* ((1)/(5280) )/((1)/(3600) )`

⇒ Speed in miles per hour=
`9.09* (3600)/(5280)`

⇒Speed in miles per hour=
`9.09* 0.68= 6.19 (mi)/(h)`

∴ Philip ran at a speed of 6.2 miles per hour(nearest tenth decimal).