Answer:
The average speed of runner is 8.0849 [tex]\frac{ft}{h}[/tex].
Given:
Distance covered by runner = 4875 ft = 0.9233 miles
Time taken by runner to covered distance = 6.85 minutes = 0.1142 hour
To find:
The average speed of the runner = ?
Formula used:
Average speed of the runner is given by,
Average speed = [tex]\frac{Total distance}{Total time}[/tex]
Average speed = [tex]\frac{0.9233}{0.1142}[/tex]
Average speed = 8.0849 [tex]\frac{ft}{h}[/tex]
The average speed of runner is 8.0849 [tex]\frac{ft}{h}[/tex].
The runner’s average speed in miles per hour is 8.41 mph
The given parameters;
distance traveled, d = 4875 ft
time of motion, t= 6.85 minutes
The distance traveled in miles is calculated as;
1 mile = 5280 ft
[tex]4875 \ ft = \frac{4875}{5280 } \ mile= 0.923 \ mile[/tex]
The time of motion in hour is calculated as;
1 hour = 60 minutes
[tex]6.58 \ minutes = \frac{6.58}{60} \ hr = 0.1097 \ hr[/tex]
The the runner’s average speed in miles per hour is calculated as;
[tex]v = \frac{distance }{time} \\\\v = \frac{0.923}{0.1097} = 8.41 \ mi/hr[/tex]
Thus, the runner’s average speed in miles per hour is 8.41 mph
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