What is the average speed of the sprinter in kilometers per hour?

A sprinter set a high school record in track and field, running 200.0m in 20.7s. What is the average speed of the sprinter in kilometers per hour?|||distance = rate x time





First, you need to solve for the rate, or average speed.





200m = rate x (20.7s)





Divide 200m by 20.7 s to get the average speed.





rate = 9.66 m/s





However, the units are in m/s (the SI unit for velocity and rate), and the problem asks for km/h.





To first convert to km, divide 9.66 by 1000. (1000 m in 1 km) This gives you .00966 km/s.





Finally, to convert s to hrs, multiply by 3600 (3600 s in 1 hr).





This gives you 34.78 km/hr, which is your final answer.





Hope that helps! :)|||34.78km/h


convert both to kilometers and hours and divide them both.


hope that helps|||34.782 km/h??