Answer:
Emily's speed is the greatest, therefor she is the fastest at a speed of 1.78 m/s
Step-by-step explanation:
To determine who swam the fastest we need to calculate the speed for each swimmer;
Speed=Distance/time
Deborah covered a distance of 50 meters in 40.8 seconds,
Deborah's speed=(Deborah's distance/Time)=(50/40.8)=1.23 meters per second
Robert covered a distance of 100 meters in 60.2 seconds,
Robert's speed=(Robert's distance/Time)=(100/60.2)=1.66 meters per second
Emily covered a distance of 200 meters in 112.4 seconds,
Emily's speed=(Emily's distance/Time)=(200/112.4)=1.78 meters per second
From the speeds for each we can conclude that;
Emily's speed(1.78 m/s)>Robert's speed(1.66 m/s)>Deborah's speed(1.23 m/s)
Emily's speed is the greatest, therefor she is the fastest at a speed of 1.78 m/s
