t1 = 5/11.3 = .4425 hour
t2 = 5/14.9 = .3356 hour
waiting time = difference= .1069 hr
= 6.415 minutes
= 6 minutes and 25 seeconds
In a 5.00 km race, one runner runs at a steady 11.3 km/h and another runs at 14.9 km/h .
How long does the faster runner have to wait at the finish line to see the slower runner cross?
1 answer