D = rate x time
D = 5.436 m/s x time in seconds
You have to change 9 minutes to seconds and since there are 60 sec in each minute, you have 540 sec.
210 s + 540 s + now change 2 hours to seconds.
that will give you the time you need for the equation.
the olympic record for the marathon is 2.00 h 9.00 min 210 s. if the average speed of a runner achieving this record is 5.436 m/s, what is the marathon distance
1 answer
1 answer