30 seconds
28 weeks = 16,934,400 seconds.
28 miles per hour = (28 x 5280 feet)/(60 x 60 seconds) = 41.0667 feet per second
The unit rate is how far something moves in ONE second. So in this case you divide by 28 (the number of seconds). 12/28=0.4285714285714286 meters a second.
2,419,200 24x60x60 = 86,400 seconds in a day 86,400 x 28 = 2,419,200 seconds in 28 days
4 metres per second.
7 minutes, 28 seconds
28*24*60*60 is 2419200 seconds.
28 minutes, 26 seconds
200 metres/28 seconds = 7.1 metres/second, to the justified number of significant digits.
3600
To convert 4 minutes to seconds, you multiply 4 by 60 (since there are 60 seconds in a minute), which equals 240 seconds. Adding the additional 28 seconds gives a total of 268 seconds in 4 minutes and 28 seconds.
26,880 seconds.