Final answer:
The seagull's velocity is 9 meters/second, calculated by dividing the distance flown in a quarter of the total time (45 meters in 5 seconds) by the time interval.
Step-by-step explanation:
To calculate the velocity of the seagull, we need to use the information provided. The seagull flew 45 meters in one-quarter of the total time, which was 20 seconds. Since one-quarter of 20 seconds is 5 seconds, we can find the velocity using the formula:
Velocity = Distance / Time
So the seagull's velocity would be:
Velocity = 45 meters / 5 seconds = 9 meters/second