Final answer:
The swimmer's velocity is 1 meter/second east, calculated by dividing the distance of 100 meters by the time of 100 seconds, and including the direction of the swimmer's motion.
Step-by-step explanation:
The student asked what the velocity of a swimmer is if it takes them 100 seconds to swim a 100 meter length of a pool going east. Velocity is a vector quantity, which means it has both a magnitude and a direction. To calculate the swimmer's velocity, we divide the total distance traveled by the time taken to travel that distance and include the direction of motion. Since the swimmer is going eastward, and it took them 100 seconds to swim the 100-meter length of the pool, the velocity is calculated as follows:
V = distance/time
V = 100 meters / 100 seconds
V = 1 meter/second east
The swimmer's velocity is 1 meter/second east. It is important to include the direction (east) when discussing velocity to differentiate it from speed, which does not include direction.