Question

Using a stopwatch Tyrone determines it takes him 58.2 minutes to travel 30 miles to work the stopwatch measures to hundredths of a minute going by the accuracy of the stopwatch which is the most accurate determination for the number of feet per second Tyrone traveled on his way to work?

1 mile = 5,280 feet



1. 19.80 feet ps


2. 19.84 feet ps


3. 45.3 feet ps


4. 45.36 feet ps

Answer 1

45.36 feet ps IS THE ANSWER AND NOW GO AND SOLVE IT

Answer 2

Correct choice is 4.

Explanation:

Tyrone determines it takes him 58.2 minutes to travel 30 miles to work, then he travels with speed

`(30)/(58.2)=(300)/(582)=(50)/(97)\ \text{miles per minute}.`

If 1 mile = 5,280 feet, then his speed is

`(50)/(97)\cdot 5280=(264000)/(97)\ \text{feet per minute}.`

Since 1 minute = 60 seconds, then his speed is

`(264000)/(97\cdot 60)=(4400)/(97)\approx 45.36\ \text{feet per second}.`