Thank you. I don't know if this one is right- At the speed of 2.5m/s, how many seconnds will it take the kayak to run a 4,500 m course? what is the speed of the kayak in kilometers per hour?
speed= 4,500km/2.5h*60min/1 h =270,000/2.5=108,000km/h
Thank you Ms. Sue :-)