Charlie runs at a speed of 3 yards per second. About how many miles per hour does Charlie run?

Question

I need help on this, my math work is due TODAY.

Answer 1

3 yards per second

1760 yards per mile (four 440's around a track, 4x440= 1760)

60 minutes per hour, 60 seconds per minute 3600 seconds per hour

3(/1760) miles per second

3(3600)/(1760) miles per hour

1080/176 mph

=about 6.14 mph

or to save time or check the answer

go online to some conversion websites

that convert feet per second to miles per hour

3 yards per second = 9 feet per second

they give slightly less than 6.14,

round off to 2 decimals gives 6.14 miles per hours

about 4 to 5 mph is a normal walking speed

6.14 mph seems realistic for 3 yards per second

1 yard every 1/3 of a second

if you calculate and get something too far outside that general range, recheck your numbers