Sydney ran 400 meters in 1 min. 20 sec. What was Sydney's average rate in meters per second?

Question

400 meters in 1 min. 20 sec. 

average rate in meters per sec. =?

Answer 1

 

Rate = distance/time

 

given that

 

distance=400 m

 

time= 1 min. 20 sec= 60+20=80 sec

 

rate= 400 m / 80 s= 5m/s

 

So average rate  is 5 m/s